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Welcome to the RRUFF Project website containing an integrated database of Raman spectra, X-ray diffraction and chemistry data for minerals. |
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Magnesite RRUFF ID: R050443 |
Ideal Chemistry: MgCO3 |
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Locality: Brumado, Bahia, Brazil Source: Eugene Schlepp Owner: RRUFF Description: Group of colorless crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Calcite (36) ] | ||||||||||
| Quick search: [ All Magnesite samples (5) ] | ||||||||||
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Magnesite RRUFF ID: R050676 |
Ideal Chemistry: MgCO3 |
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Locality: Tyrol, Austria Source: University of Arizona Mineral Museum 3874 Owner: RRUFF Description: Brown rhombohedral crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Calcite (36) ] | ||||||||||
| Quick search: [ All Magnesite samples (5) ] | ||||||||||
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Magnesium stearate RRUFF ID: D120003 |
Ideal Chemistry: Mg(C18H35O2)2 |
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Locality: Synthetic Source: David Blake Owner: RRUFF Description: Fine white powder. Magnesium stearate is used as an excipient in medical tablets, capsules and powders. Status: The identification of this mineral is not yet confirmed. |
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Magnetite RRUFF ID: R060191 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: Merry Widow mine, Vancouver Island, British Columbia, Canada Source: Lloyd Twaites Owner: RRUFF Description: Grayish-black octahedral crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetite RRUFF ID: R060222 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: Cerro Huañaquino, Potosi Department, Bolivia Source: Rock Currier Owner: RRUFF Description: Black octahedra, the surface is hematite and the interior is magnetite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetite RRUFF ID: R060656 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: Jacupiranga Pegmatite, Sao Paulo State, Brazil Source: Michael Scott S101168 Owner: RRUFF Description: Black rounded octahedra associated with phlogopite and diopside Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetite RRUFF ID: R061111 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: near Scotia Talc mine, Barberton Mountain, Transvaal, South Africa Source: Michael Scott S104099 Owner: RRUFF Description: Black submetallic grains and octahedra associated with light green massive willemseite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetite RRUFF ID: R080025 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: 2500' level, Zinc Corporation of America mine #4, Balmat, New York, USA Source: William W. Pinch Owner: RRUFF Description: Black cubes Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetite RRUFF ID: R140861 |
Ideal Chemistry: Fe2+Fe3+2O4 |
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Locality: Bon Accord, Barberton District, Mpumalanga Province, South Africa Source: Rock Currier Owner: RRUFF Description: Dark green isolated granular or octahedral crystals, associated with yellowish-green irregular veins of nimite, minute light-green opaque grains of willemseite, reevesite as yellowish-green massive earthy vug material and limonite. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnetite samples (6) ] | ||||||||||
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Magnetoplumbite RRUFF ID: R060074 |
Ideal Chemistry: Pb2+Fe3+12O19 |
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Locality: Langban, Filipstad, Varmland, Sweden Source: University of Arizona Mineral Museum 16289 Owner: RRUFF Description: Black granular and massive Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Magnetoplumbite (4) ] | ||||||||||
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Magnussonite RRUFF ID: R100027 |
Ideal Chemistry: Mn2+5As3+3O9(OH,Cl) |
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Locality: Langban, Filipstad, Varmland, Sweden Source: William W. Pinch Owner: RRUFF Description: Dark green massive, associated with brown armangite R100041, and white nadorite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Magnussonite (1) ] | ||||||||||
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Majorite RRUFF ID: R210005 |
Ideal Chemistry: Mg3(MgSi)(SiO4)3 |
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Locality: Synthesized at at 20-25 GPa and 1600-1700 °C Source: Jurgen Konzett TP-MA-6 Owner: RRUFF Description: Colorless grains, associated with bridgmanite (R210006). Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ garnet (97) ] | ||||||||||
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Makatite RRUFF ID: R050594 |
Ideal Chemistry: Na2Si4O8(OH)2·4H2O |
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Locality: Aris phonolite, Windhoek District, Windhoek, Namibia Source: Marcus Origlieri Owner: RRUFF Description: White fibrous mass Status: The identification of this mineral is not yet confirmed. |
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Malachite RRUFF ID: R050531 |
Ideal Chemistry: Cu2+2CO3(OH)2 |
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Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia Source: University of Arizona Mineral Museum 4809 Owner: RRUFF Description: Spherical aggregates of green radiating acicular crystals associated with olivenite and bayldonite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ malachite (7) ] | ||||||||||
| Quick search: [ All Malachite samples (2) ] | ||||||||||
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Malachite RRUFF ID: R050508 |
Ideal Chemistry: Cu2+2CO3(OH)2 |
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Locality: Kambova, Kantanga, Zaire Source: University of Arizona Mineral Museum 12261 Owner: RRUFF Description: Green short bladed crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ malachite (7) ] | ||||||||||
| Quick search: [ All Malachite samples (2) ] | ||||||||||
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Malanite RRUFF ID: R070051 |
Ideal Chemistry: Cu1+(Ir3+Pt4+)S2-4 |
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Locality: placer from Philipp Massif, Kamchatka, Russia Source: Michael Scott S105075 Owner: RRUFF Description: Silver gray metallic polished fragment embedded in epoxy Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
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Malayaite RRUFF ID: R061131 |
Ideal Chemistry: CaSn4+O(SiO4) |
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Locality: Humpolec, Czech Republic Source: Michael Scott S100381 Owner: RRUFF Description: Pale tan colored grains disseminated through the rock Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Titanite (17) ] | ||||||||||
| Quick search: [ All Malayaite samples (3) ] | ||||||||||
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Malayaite RRUFF ID: R061106 |
Ideal Chemistry: CaSn4+O(SiO4) |
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Locality: Meldon, Dartmoor, Devon, England Source: Michael Scott S100848 Owner: RRUFF Description: Dark yellow massive associated with wollastonite and garnet Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Titanite (17) ] | ||||||||||
| Quick search: [ All Malayaite samples (3) ] | ||||||||||
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Malayaite RRUFF ID: R080024 |
Ideal Chemistry: CaSn4+O(SiO4) |
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Locality: Ash Mountain, McDame, British Columbia, Canada Source: Mark N. Feinglos, William P. Pinch Owner: RRUFF Description: Tan colored tabular crystals with a subconchoidal fracture on a broken surface. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Titanite (17) ] | ||||||||||
| Quick search: [ All Malayaite samples (3) ] | ||||||||||
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Malhmoodite RRUFF ID: R060462 |
Ideal Chemistry: Fe2+Zr4+(PO4)2·4H2O |
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Locality: Union Carbide Vanadium mine, Wilson Springs, Garland County, Arkansas, USA Source: Michael Scott S100114 Owner: RRUFF Description: White to cream spherical aggregates of acicular crystals associated with colorless albite, dark green aegirine, octahedral pyrochlore, and yellowish titanite. Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ Malhmoodite (3) ] | ||||||||||
| Quick search: [ All Malhmoodite samples (2) ] | ||||||||||
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Malhmoodite RRUFF ID: R200009 |
Ideal Chemistry: Fe2+Zr4+(PO4)2·4H2O |
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Locality: Scott's R.Q. mine, Custer Co., South Dakota, U.S.A. Source: Tom Loomis Owner: RRUFF Description: Yellowish flat lying plates, divergent groups on matrix. Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Malhmoodite (3) ] | ||||||||||
| Quick search: [ All Malhmoodite samples (2) ] | ||||||||||
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Mammothite RRUFF ID: R130100 |
Ideal Chemistry: Pb2+6Cu2+4AlSb5+O2(S6+O4)2Cl4(OH)16 |
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Locality: Rowley mine, Maricopa County, Arizona, USA Source: Joe Ruiz Owner: RRUFF Description: Blue bladed crystals, associated with blue cubes of boleite R130099, irregular masses of blue diaboleite, colorless paralaurionite, colorless gypsum in massive cerussite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Manaksite RRUFF ID: R060693 |
Ideal Chemistry: KNaMn2+Si4O10 |
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Locality: Palitra pegmatite, Kedykverpakhk Mountain, Lovozero massif, Kola Peninsula, Russia Source: Michael Scott S100949 Owner: RRUFF Description: Pale brown massive associated with grayish-green bario-olgite, R060614, purple ussingite and colorless serandite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Litidionite (3) ] | ||||||||||
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Manandonite RRUFF ID: R060968 |
Ideal Chemistry: Li2Al4(Si2AlB)O10(OH)8 |
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Locality: Antandro Komby mine, Manandona River, Antsirabe, Madagascar Source: Michael Scott S100388 Owner: RRUFF Description: Botryoidal coating of tan colored pseudohexagonal plates on red tourmaline and gray feldspar. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Groups: [ Clay (86) ] [ serpentine (12) ] | ||||||||||
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Mandarinoite RRUFF ID: R140742 |
Ideal Chemistry: Fe3+2(Se4+O3)3·6H2O |
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Locality: Skouriotissa mine, Skouriotissa, Nicosia District, Cyprus Source: Rock Currier Owner: RRUFF Description: Pale blueish green bladed crystals, associated with light brown granular natrojarosite and colorless quartz Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Mandarinoite (3) ] | ||||||||||
| Quick search: [ All Mandarinoite samples (2) ] | ||||||||||
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Mandarinoite RRUFF ID: R220014 |
Ideal Chemistry: Fe3+2(Se4+O3)3·6H2O |
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Locality: Wind Mountain mine, Washoe County, Nevada, U.S.A. Source: Jim McGlasson Owner: RRUFF Description: Aggregates of or individual very pale blue prismatic or bladed crystals, on top of fine pale yellow alunite. Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Mandarinoite (3) ] | ||||||||||
| Quick search: [ All Mandarinoite samples (2) ] | ||||||||||
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Manganbabingtonite RRUFF ID: R140743 |
Ideal Chemistry: Ca2Mn2+Fe3+Si5O14(OH) |
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Locality: Iron Cap mine, Aravaipa District, Graham County, Arizona, USA Source: Rock Currier Owner: RRUFF Description: Short prismatic dark-greenish crystals, associated with small needle hedenbergite crystals. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rhodonite (16) ] | ||||||||||
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Mangani-obertiite RRUFF ID: R141096 |
Ideal Chemistry: NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
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Locality: Caspar quarry, Bellerberg volcano, Mayen, Eifel, Germany Source: Ch. and H. Schäfer Owner: RRUFF Description: Acicular salmon-colored crystals, orthoclase, quartz, and allanite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
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Manganilvaite RRUFF ID: R070334 |
Ideal Chemistry: CaFe2+Fe3+Mn2+(Si2O7)O(OH) |
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Locality: First Sovetskiy mine, Dalnegorsk, Far East of Russia Source: Michael Scott S100979 Owner: RRUFF Description: Black prismatic crystal Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Ilvaite (3) ] | ||||||||||
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Manganite RRUFF ID: R060827 |
Ideal Chemistry: Mn3+O(OH) |
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Locality: Roberts mine, Crosby, Minnesota, USA Source: Michael Scott S101187 Owner: RRUFF Description: Black submetallic prismatic crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Rutile (23) ] | ||||||||||
| Quick search: [ All Manganite samples (3) ] | ||||||||||
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Manganite RRUFF ID: R070269 |
Ideal Chemistry: Mn3+O(OH) |
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Locality: Wessels mine, Hotazel, Kalahari manganese field, Northern Cape Province, South Africa Source: Michael Scott S102942 Owner: RRUFF Description: Divergent black acicular crystals (with dark brown lights) associated with gaudefroyite in gypsum cleavage plate Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rutile (23) ] | ||||||||||
| Quick search: [ All Manganite samples (3) ] | ||||||||||
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Manganite RRUFF ID: R070593 |
Ideal Chemistry: Mn3+O(OH) |
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Locality: Ilfeld, near Nordhausen, Harz Mountains, Thuringia, Germany Source: James Shigley Owner: RRUFF Description: Bundled aggregates of steel-gray metallic prisms Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Rutile (23) ] | ||||||||||
| Quick search: [ All Manganite samples (3) ] | ||||||||||
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Mangano-ferri-eckermannite RRUFF ID: R070122 |
Ideal Chemistry: NaNa2(Mn2+4Fe3+)Si8O22(OH)2 |
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Locality: Tanohata mine, Iwate Prefecture, Tohoku Region, Honshu Island, Japan Source: Michael Scott S100408 Owner: RRUFF Description: Dark red bladed crystals and cleavages associated with braunite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
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Mangano-mangani-ungarettiite RRUFF ID: R050244 |
Ideal Chemistry: NaNa2(Mn2+2Mn3+3)Si8O22O2 |
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Locality: Hoskins mine, near Grenfell, New South Wales, Australia Source: Marcus Origlieri Owner: RRUFF Description: Dark red granular, associated with namansilite, R070006 Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
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Manganoeudialyte RRUFF ID: R110212 |
Ideal Chemistry: Na14Ca6Mn2+3Zr4+3[Si26O72(OH)2](H2O,Cl,O,OH)6 |
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Locality: Pocos de Caldas plateau, Minas Gerais, Brazil Source: Gunnar Farber Owner: RRUFF Description: Red massive associated with orthoclase, nepheline and aegirine Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ eudialyte (13) ] | ||||||||||
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Manganogrunerite RRUFF ID: R060378 |
Ideal Chemistry: ◻Mn2+2Fe2+5Si8O22(OH)2 |
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Locality: Brunsjogruvan (Brunsjo mine), near Hallefors, Orebro, Sweden Source: Michael Scott S100223 Owner: RRUFF Description: Brown parallel fibers Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
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Manganohörnesite RRUFF ID: R061005 |
Ideal Chemistry: Mn2+3(As5+O4)2·8H2O |
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Locality: Mossgruven, Nordmark, Sweden Source: Michael Scott S101277 Owner: RRUFF Description: Aggregate of colorless platy crystals Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Vivianite (17) ] | ||||||||||
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Manganoneptunite RRUFF ID: R060901 |
Ideal Chemistry: KNa2LiMn2+2Ti4+2Si8O24 |
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Locality: Mont St. Hilaire, Quebec, Canada Source: Royal Ontario Museum M52451 Owner: RRUFF Description: Dark reddish-brown single crystal cleavage fragment. Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Neptunite (4) ] | ||||||||||
| Quick search: [ All Manganoneptunite samples (2) ] | ||||||||||
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Manganoneptunite RRUFF ID: R130094 |
Ideal Chemistry: KNa2LiMn2+2Ti4+2Si8O24 |
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Locality: Mount Kurnasurt, Lovozero Massif, Kola Peninsula, USSR Source: Michael Scott S100990 Owner: RRUFF Description: Deep red massive, good cleavage, associated with raite R060854, and orthoclase Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Neptunite (4) ] | ||||||||||
| Quick search: [ All Manganoneptunite samples (2) ] | ||||||||||
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Manganonordite-(Ce) RRUFF ID: R140749 |
Ideal Chemistry: Na3SrCe3+Mn2+Si6O17 |
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Locality: Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Source: Rock Currier Owner: RRUFF Description: Colorless to pale grey tabular crystals, associated with black aegirine and ussingite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Nordite (5) ] | ||||||||||
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Manganoquadratite RRUFF ID: R090021 |
Ideal Chemistry: Ag1+Mn2+As3+S2-3 |
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Locality: Uchucchacua, Lima Department, Peru Source: William W. Pinch Owner: RRUFF Description: Tetragonal stepped crystals associated with proustite and alabandite. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Quadratite (1) ] | ||||||||||
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Manganosite RRUFF ID: R060695 |
Ideal Chemistry: Mn2+O |
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Locality: Franklin, New Jersey, USA Source: Bob Jenkins Owner: RRUFF Description: Dark green coarse prismatic crystals associated with calcite and red zincite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rocksalt (18) ] | ||||||||||
| Quick search: [ All Manganosite samples (2) ] | ||||||||||
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Manganosite RRUFF ID: R060757 |
Ideal Chemistry: Mn2+O |
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Locality: Nordmark, Sweden Source: Michael Scott S101129 Owner: RRUFF Description: Dark green crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rocksalt (18) ] | ||||||||||
| Quick search: [ All Manganosite samples (2) ] | ||||||||||
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Manganvesuvianite RRUFF ID: R060377 |
Ideal Chemistry: Ca19Mn3+Al10Mg2(SiO4)10(Si2O7)4O(OH)9 |
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Locality: K'Chwaning II mine, Kalahari manganese field, north Cape Province, South Africa Source: Michael Scott S100306 Owner: RRUFF Description: Deep reddish-brown prismatic crystals associated with black hausmannite Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Vesuvianite (12) ] | ||||||||||
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Manitobaite RRUFF ID: R130259 |
Ideal Chemistry: Na16Mn2+25Al8(PO4)30 |
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Locality: Gottcha Claim (Pegmatite No. 22), Cross Lake, Manitoba, Canada Source: Rock Currier Owner: RRUFF Description: Red-brown massive, associated with quartz Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Groups: [ Alluaudite (22) ] [ Manitobaite (2) ] | ||||||||||
| Quick search: [ All Manitobaite samples (2) ] | ||||||||||
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Manitobaite RRUFF ID: R130260 |
Ideal Chemistry: Na16Mn2+25Al8(PO4)30 |
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Locality: Gottcha Claim (Pegmatite No. 22), Cross Lake, Manitoba, Canada Source: Rock Currier Owner: RRUFF Description: Green or brown massive Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Groups: [ Alluaudite (22) ] [ Manitobaite (2) ] | ||||||||||
| Quick search: [ All Manitobaite samples (2) ] | ||||||||||
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Manjiroite RRUFF ID: R060379 |
Ideal Chemistry: Na(Mn4+7Mn3+)O16 |
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Locality: Wessels mine, Kalahari Manganese Field, South Africa Source: Michael Scott S100035 Owner: RRUFF Description: Steel gray bed of parallel fibers Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Coronadite (13) ] | ||||||||||
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Mannardite RRUFF ID: R060966 |
Ideal Chemistry: Ba(Ti4+6V3+2)O16 |
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Locality: Rough Claims, Laird Mining Division, British Columbia, Canada Source: Mark Mauthner 3094 Owner: RRUFF Description: Black submetallic elongated prismatic crystals on quartz Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Coronadite (13) ] | ||||||||||
| Quick search: [ All Mannardite samples (2) ] | ||||||||||
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Mannardite RRUFF ID: R080136 |
Ideal Chemistry: Ba(Ti4+6V3+2)O16 |
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Locality: Corinto area, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Black prismatic inclusion in quartz Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Coronadite (13) ] | ||||||||||
| Quick search: [ All Mannardite samples (2) ] | ||||||||||
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Mansfieldite RRUFF ID: R060409 |
Ideal Chemistry: AlAs5+O4·2H2O |
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Locality: Djebel Debagh, Constantine, Algeria Source: Herb Obodda 044 Owner: RRUFF Description: Pale blue cryptocrystalline mass Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Mansfieldite samples (2) ] | ||||||||||
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Mansfieldite RRUFF ID: R060951 |
Ideal Chemistry: AlAs5+O4·2H2O |
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Locality: Pampa Larga Mining District, Chile Source: Bob Jenkins Owner: RRUFF Description: Sharp pale rose crystals, fairly transparent. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Quick search: [ All Mansfieldite samples (2) ] | ||||||||||
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Mapimite RRUFF ID: R080002 |
Ideal Chemistry: Zn2+2Fe3+3(As5+O4)3(OH)4·10H2O |
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Locality: Level 5 between Palomes Oriente and San Carlos, Ojuela mine, Mapimi, Durango, Mexico Source: William W. Pinch, from M Romero 5749 Owner: RRUFF Description: Group of green tabular, rectangular crystals, from the original find Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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)
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Marcasite RRUFF ID: R060882 |
Ideal Chemistry: FeS2 |
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Locality: Ive's Quarry, Racine, Wisconsin, USA Source: Bob Jenkins Owner: RRUFF Description: Brassy yellow prismatic crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Marcasite (2) ] | ||||||||||
)
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Marécottite RRUFF ID: R070057 |
Ideal Chemistry: Mg3O6(U6+O2)8(S6+O4)4(OH)2·28H2O |
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Locality: La Creusaz U prospect, Marecottes Village, Canton, Wallis, Switzerland Source: Michael Scott S105077 Owner: RRUFF Description: Yellow granular coating Status: The identification of this mineral is not yet confirmed. |
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)
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Margaritasite RRUFF ID: R060461 |
Ideal Chemistry: Cs1+2(U6+O2)2(V5+O4)2·H2O |
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Locality: Margaritas Open Pit, Sierra Pena Blanca, Chihuahua, Mexico Source: Michael Scott S100084 Owner: RRUFF Description: Yellow earthy, massive, sponge-like appearance Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ Sengierite (3) ] | ||||||||||
)
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Margarite RRUFF ID: R060839 |
Ideal Chemistry: CaAl2(Si2Al2)O10(OH)2 |
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Locality: Old Emery mine, Chester, Massachusetts, USA Source: Michael Scott S100904 Owner: RRUFF Description: Pale lilac mica associated with lilac colored axinite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Groups: [ mica (50) ] [ Clay (86) ] | ||||||||||
)
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Margarosanite RRUFF ID: R120111 |
Ideal Chemistry: Ca2Pb2+Si3O9 |
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Locality: Parker shaft, Franklin, New Jersey, USA Source: Caltech H-2644 Owner: RRUFF Description: Pearly, colorless cleavages Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Margarosanite (3) ] | ||||||||||
)
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Marialite RRUFF ID: R040043 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Gouverneur, New York, USA Source: University of Arizona Mineral Museum 8081 Owner: RRUFF Description: White prismatic crystals, associated with calcite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R040113 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Gouverneur, New York, USA Source: University of Arizona Mineral Museum 4398 Owner: RRUFF Description: Green prismatic crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R050123 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Pakistan Source: Syed Shah Owner: RRUFF Description: Purple fragment Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R060297 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Morogoro District, Marasi, Tanzania Source: Herb Obodda 050 Owner: RRUFF Description: Pale yellow crystal fragment Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R060469 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Mpwa-Mpwa mine, Umba Valley, near Arusha, Tanzania Source: Michael Scott S100276 Owner: RRUFF Description: Yellow tetragonal prism with pronounced striations along the c-axis direction Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R060458 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Dading, Nepal Source: Michael Scott S100219 Owner: RRUFF Description: Colorless elongated prism Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R060526 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Minas Gerais, Brazil Source: Michael Scott S100229 Owner: RRUFF Description: Heavily striated pale yellow elongated prism Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R070689 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Itaguassu, Espirito Santo State, Brazil Source: Michael Scott S100902 Owner: RRUFF Description: Pale yellow striated prism; bright orange-pink fluorescence under SW UV light Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R100112 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Sar-e-Sang District, Koksha Valley, Badakhshan Province, Afghanistan Source: Robert Woodside Owner: RRUFF Description: Colorless crystal fragment Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marialite RRUFF ID: R100167 |
Ideal Chemistry: Na4Al3Si9O24Cl |
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Locality: Mapapwa, Dodoma, Tanzania Source: Mineralogical Museum, Harvard University 135997 Owner: RRUFF Description: Loose yellow prismatic crystals, work is done on the upper yellow crystal Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
| Quick search: [ All Marialite samples (10) ] | ||||||||||
)
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Marićite RRUFF ID: R070273 |
Ideal Chemistry: NaFe2+PO4 |
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Locality: Locality 16, Big Fish River, Richardson Mountains, Dawson Mining District, Yukon Territory, Canada Source: Mark Mauthner 1182 Owner: RRUFF Description: Compact radiating aggregate of gray prismatic crystals (with bluish to brownish sections) in phosphate nodule. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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)
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Maricopaite RRUFF ID: R120147 |
Ideal Chemistry: Ca2Pb2+7(Si36Al12)O99·n(H2O,OH) |
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Locality: Moon Anchor mine, Hummingbird Spring, Big Horn Mts, Maricopa County, Arizona, USA Source: Bob Jenkins and Ron Gibbs Owner: RRUFF Description: Spherical radial aggregates of white bladed crystals associated with yellow mimetite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Mordenite (4) ] | ||||||||||
)
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Marinellite RRUFF ID: R070078 |
Ideal Chemistry: Na42Ca6Al36Si36O144(S6+O4)8Cl2·6H2O |
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Locality: Monte Cavalluccio, Sacrofano, Campagnano di Roma, Italy Source: Michael Scott S105076 Owner: RRUFF Description: Colorless to pale bluish-gray anhedral crystals Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ cancrinite-sodalite (37) ] | ||||||||||
)
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Markascherite RRUFF ID: R100030 |
Ideal Chemistry: Cu2+3Mo6+O4(OH)4 |
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Locality: Childs Aldwinkle mine, Bunker Hill District, Copper Creek, Pinal County, Arizona, USA Source: Mark Ascher Owner: RRUFF Description: Green bladed crystals on quartz. This is the type specimen Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Not in a structural group (133) ] | ||||||||||
)
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Marokite RRUFF ID: R060829 |
Ideal Chemistry: CaMn3+2O4 |
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Locality: Tachguagalt, Morocco Source: Michael Scott S101266 Owner: RRUFF Description: Black with carmine-red internal reflections, massive Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Post-spinel (2) ] | ||||||||||
| Quick search: [ All Marokite samples (2) ] | ||||||||||
)
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Marokite RRUFF ID: R070275 |
Ideal Chemistry: CaMn3+2O4 |
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Locality: Synthetic Source: Hexiong Yang Owner: RRUFF Description: Unconsolidated black crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Post-spinel (2) ] | ||||||||||
| Quick search: [ All Marokite samples (2) ] | ||||||||||
)
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Marshite RRUFF ID: R100001 |
Ideal Chemistry: Cu1+I1- |
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Locality: Rubtsovskiy, Altai Kray, Russia Source: Marcus Origlieri Owner: RRUFF Description: Pale yellow vitreous tetrahedra associated with colorless cerussite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Sphalerite (35) ] | ||||||||||
)
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Marsturite RRUFF ID: R141122 |
Ideal Chemistry: NaCaMn2+3Si5O14(OH) |
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Locality: Joaquina 1a mine, Bellmunt del Priorat, Tarragona, Catalonia, Spain Source: Joan Abella i Creus Owner: RRUFF Description: Massive aggregate of elongated or bladed grey to grey-brownish crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rhodonite (16) ] | ||||||||||
| Quick search: [ All Marsturite samples (3) ] | ||||||||||
)
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Marsturite RRUFF ID: R141119 |
Ideal Chemistry: NaCaMn2+3Si5O14(OH) |
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Locality: Gozaisho mine, Fukushima Prefecture, Japan Source: Marcus Origlieri Owner: RRUFF Description: Massive aggregate of parallel prismatic or bladed yellowish orange crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rhodonite (16) ] | ||||||||||
| Quick search: [ All Marsturite samples (3) ] | ||||||||||
)
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Marsturite RRUFF ID: R141210 |
Ideal Chemistry: NaCaMn2+3Si5O14(OH) |
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Locality: Wessels mine, Kalahari Manganese Field, Northern Cape Province, South Africa Source: Jaco and Tania Janse van Nieuwenhuizen Owner: RRUFF Description: Colorless granular crystals in a vein. The matrix is a mixture of quartz and bixbyite, associated with schizolite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Rhodonite (16) ] | ||||||||||
| Quick search: [ All Marsturite samples (3) ] | ||||||||||
)
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Marthozite RRUFF ID: R090052 |
Ideal Chemistry: Cu2+(U6+O2)3(Se4+O3)2O2·8H2O |
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Locality: Musonoi mine, Kolwezi, Katanga, Congo Source: William W. Pinch Owner: RRUFF Description: Yellowish green triangular shaped flattened and striated crystals, associated with guilleminite and green brochantite. Sample is from the same specimen used in the Cooper and Hawthorne (2001) study Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Guilleminite (3) ] | ||||||||||
)
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Mascagnite RRUFF ID: R060640 |
Ideal Chemistry: (N3-H4)2S6+O4 |
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Locality: Ravat, Tajikistan Source: Michael Scott S100822 Owner: RRUFF Description: Tan colored spheres forming a crust, associated with apjohnite Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Arcanite (3) ] | ||||||||||
| Quick search: [ All Mascagnite samples (3) ] | ||||||||||
)
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Mascagnite RRUFF ID: R141105 |
Ideal Chemistry: (N3-H4)2S6+O4 |
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Locality: Cultured biogenically in laboratory. Source: Kenny Lloyd and Dirk Andrews Owner: RRUFF Description: White or colorless tabular, prismatic, granular, or bladed crystals, made by drying the liquid. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Arcanite (3) ] | ||||||||||
| Quick search: [ All Mascagnite samples (3) ] | ||||||||||
)
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Mascagnite RRUFF ID: R141117 |
Ideal Chemistry: (N3-H4)2S6+O4 |
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Locality: Ravat Saravanan, Tajikistan Source: Kenny Lloyd and Dirk Andrews Owner: RRUFF Description: Colorless prismatic crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Arcanite (3) ] | ||||||||||
| Quick search: [ All Mascagnite samples (3) ] | ||||||||||
)
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Masutomilite RRUFF ID: R061008 |
Ideal Chemistry: KLiAlMn2+(Si3Al)O10(F,OH)2 |
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Locality: Tanokamiyama, Shiga Prefecture, Japan Source: Michael Scott S101311 Owner: RRUFF Description: Brownish purple mica fragment Status: The identification of this mineral has been made only by X-ray diffraction. |
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| Mineral Group: [ mica (50) ] | ||||||||||
)
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Matlockite RRUFF ID: R140538 |
Ideal Chemistry: Pb2+ClF |
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Locality: Mammoth mine, Tiger, Pinal County, Arizona, USA Source: The University of Arizona Mineral Museum 5194 and 10550 Owner: RRUFF Description: Pale yellowish or colorless platy crystals, associated with bright orange georgerobinsonite (R110148), quartz, and cerussite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Matlockite (3) ] | ||||||||||
)
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Mattheddleite RRUFF ID: R070490 |
Ideal Chemistry: Pb2+5(SiO4)1.5(S6+O4)1.5Cl |
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Locality: Dry Smale Gill, Roughton Gill, Caldbeck Fells, Cumbria (Cumberland), England, United Kingdom Source: Bob Jenkins Owner: RRUFF Description: Radial aggregates of colorless hexagonal prisms associated with elongated bladed striated blue-green caledonite and creamy yellow barite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
)
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Mawbyite RRUFF ID: R080011 |
Ideal Chemistry: Pb2+Fe3+2(As5+O4)2(OH)2 |
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Locality: Tsumeb, Namibia Source: William W. Pinch Owner: RRUFF Description: Reddish brown wedge-shaped crystals, many V-twinned, associated with quartz and scorodite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Natrochalcite (13) ] | ||||||||||
)
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Maxwellite RRUFF ID: R060955 |
Ideal Chemistry: NaFe3+As5+O4F |
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Locality: Squaw Creek Tin mine, Catron County, New Mexico, USA Source: Bob Jenkins Owner: RRUFF Description: Red prismatic crystals in quartz matrix associated with hematite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Titanite (17) ] | ||||||||||
)
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Mbobomkulite RRUFF ID: R060597 |
Ideal Chemistry: (Ni2+,Cu2+)Al4(N5+O3,S6+O4)2(OH)12·3H2O |
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Locality: Jomac mine, San Juan County, Utah, USA Source: Michael Scott S100798 Owner: RRUFF Description: Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Chalcoalumite (4) ] | ||||||||||
)
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Mcgillite RRUFF ID: R110206 |
Ideal Chemistry: Mn2+8Si6O15(OH)8Cl2 |
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Locality: Sullivan mine, Kimberley, British Columbia, Canada Source: Royal Ontario Museum M36127 Owner: RRUFF Description: Pink massive platy associated with black sphalerite and milky-white quartz. Metatype sample. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Groups: [ Pyrosmalite (9) ] [ Clay (86) ] | ||||||||||
)
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Mcgovernite RRUFF ID: R110030 |
Ideal Chemistry: Zn2+3(Mn2+,Mg,Fe3+,Al)42(As3+O3)2(As5+O4)4[(Si,As5+)O4]8(OH)42 |
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Locality: Sterling Hill mine, Odgensberg, Sussex County, New Jersey, USA Source: William W Pinch Owner: RRUFF Description: Dark orange-brown micaceous crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Hematolite (6) ] | ||||||||||
)
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Mcguinnessite RRUFF ID: R070082 |
Ideal Chemistry: Cu2+MgCO3(OH)2 |
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Locality: Copper King mine, Red Mountain District, Mendocino County, California, USA Source: James Shigley Owner: RRUFF Description: Aggregates of greenish blue radially fibrous spherules Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ malachite (7) ] | ||||||||||
)
|
Medaite RRUFF ID: R130098 |
Ideal Chemistry: Mn2+6V5+Si5O18(OH) |
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Locality: Molinello mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy Source: Donald Doell (Large Piece) and Rock Currier (Small Piece) Owner: RRUFF Description: Red grains and prismatic crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Medaite (1) ] | ||||||||||
)
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Meieranite RRUFF ID: R140947 |
Ideal Chemistry: Na2Sr3MgSi6O17 |
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Locality: Wessels mine, Kalahari manganese field, Northern Cape Province, South Africa Source: Jaco and Tania Janse van Nieuwenhuizen Owner: RRUFF Description: Aggregates of granular blue crystals, associated with massive pale green sugilite, prismatic grey aegirine and bladed white pectolite. Type sample Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Nordite (5) ] | ||||||||||
)
|
Meierite RRUFF ID: R170045 |
Ideal Chemistry: Ba44Si66Al30O192Cl25(OH)33 |
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Locality: Gun Claim, Yukon Canada Source: Ron Peterson Owner: Ron Peterson Description: Colorless sub-millimeter equant inclusions within pink gillespite crystals. Type sample Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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)
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Meionite RRUFF ID: R040169 |
Ideal Chemistry: Ca4Al6Si6O24(CO3) |
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Locality: Black Hills, South Dakota, USA Source: University of Arizona Mineral Museum 12235 Owner: RRUFF Description: White massive Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Scapolite (11) ] | ||||||||||
)
|
Melanophlogite RRUFF ID: R060863 |
Ideal Chemistry: C2H17O5·Si46O92 |
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Locality: 6 miles east of Mount Hamilton, Santa Clara County, California, USA Source: Michael Scott S100869 Owner: RRUFF Description: Colorless cubes Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Melanophlogite samples (2) ] | ||||||||||
)
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Melanophlogite RRUFF ID: R110071 |
Ideal Chemistry: C2H17O5·Si46O92 |
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Locality: Giona mine, Milena, Caltanissetta Province, Sicily, Italy Source: Renato & Adriana Pagano Owner: RRUFF Description: Yellowish-brown cubes Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Melanophlogite samples (2) ] | ||||||||||
)
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Melanostibite RRUFF ID: R200016 |
Ideal Chemistry: Mn2+2Fe3+Sb5+O6 |
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Locality: Langban mine, Filipstad, Varmland, Sweden Source: Markus and Stefan Wiklund #00008 Owner: RRUFF Description: Black or submetallic platy aggregates or equally sized crystals enclosed in calcite. Status: unconfirmed |
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| Mineral Group: [ Corundum (38) ] | ||||||||||
)
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Melanotekite RRUFF ID: R090032 |
Ideal Chemistry: Pb2+2Fe3+2O2Si2O7 |
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Locality: Kombat, Namibia Source: William W. Pinch Owner: RRUFF Description: Black, massive exhibiting greasy luster, associated with colorless to pale brown bladed yangite (R090031). Sample is from the John Innes collection. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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)
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Melanovanadite RRUFF ID: R050555 |
Ideal Chemistry: CaV4+2V5+2O10·5H2O |
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Locality: Ragra mine, Cerro de Pasco Province, Pasco Department, Peru Source: Dave Bunk Minerals Owner: RRUFF Description: Radiating aggregates of black prismatic crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Melanovanadite samples (2) ] | ||||||||||
)
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Melanovanadite RRUFF ID: R060131 |
Ideal Chemistry: CaV4+2V5+2O10·5H2O |
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Locality: Minas Ragra, Peru Source: University of Arizona Mineral Museum 1112 Owner: RRUFF Description: Sprays of black prismatic crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Melanovanadite samples (2) ] | ||||||||||
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