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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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Liebigite RRUFF ID: R050662 |
Ideal Chemistry: Ca2(U6+O2)(CO3)3·11H2O |
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Locality: Schwartzwaelder mine, Jefferson County, Colorado, USA Source: University of Arizona Mineral Museum 9102 Owner: RRUFF Description: Yellowish-green flaky aggregate Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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Likasite RRUFF ID: R060327 |
Ideal Chemistry: Cu2+3N5+O3(OH)5·2H2O |
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Locality: Dzhezkazgan, Kazakhstan Source: Michael Scott S100260 Owner: RRUFF Description: Blue granular Status: The identification of this mineral is not yet confirmed. |
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| Quick search: [ All Likasite samples (2) ] | ||||||||||
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Likasite RRUFF ID: R090009 |
Ideal Chemistry: Cu2+3N5+O3(OH)5·2H2O |
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Locality: Likasi Mine, Jadotville, Katanga, Zaire Source: William W. Pinch Owner: RRUFF Description: Electric blue acicular crystals in a vug on cuprite matrix. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Likasite samples (2) ] | ||||||||||
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Lileyite RRUFF ID: R140773 |
Ideal Chemistry: Ba2Ti4+2Na2Fe2+Mg(Si2O7)2O2F2 |
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Locality: Graulay, Hillesheim, Eifel, Rhineland-Palatinate, Germany Source: Ch. and H. Schäfer Owner: RRUFF Description: Reddish brown prismatic crystals with fine striations, associated with pyroxene, schorlomite and leucite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Lamprophyllite (9) ] | ||||||||||
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Lillianite RRUFF ID: R110141 |
Ideal Chemistry: Pb2+3-2xAg1+xBi3+2+xS2-6 |
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Locality: Pedro claim, King County, Washington, USA Source: Rob Lavinsky Owner: RRUFF Description: Elongated prismatic silver gray metallic crystal, with severe exterior corrosion associated with aikinite, galena, neyite, and gustavite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Lillianite (17) ] | ||||||||||
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Linarite RRUFF ID: R060130 |
Ideal Chemistry: Pb2+Cu2+S6+O4(OH)2 |
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Locality: Graham County, Arizona, USA Source: University of Arizona Mineral Museum 9890 Owner: RRUFF Description: Azure-blue fragments in quartz Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Linarite (8) ] | ||||||||||
| Quick search: [ All Linarite samples (3) ] | ||||||||||
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Linarite RRUFF ID: R060472 |
Ideal Chemistry: Pb2+Cu2+S6+O4(OH)2 |
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Locality: Tiger, Arizona, USA Source: Michael Scott S100365 Owner: RRUFF Description: Blue tabular crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Linarite (8) ] | ||||||||||
| Quick search: [ All Linarite samples (3) ] | ||||||||||
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Linarite RRUFF ID: R120094 |
Ideal Chemistry: Pb2+Cu2+S6+O4(OH)2 |
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Locality: Daoping mine, Guangxi, China Source: Michael Scott S101361 Owner: RRUFF Description: Massive crystalline blebs associated with cerussite, dundasite R060760, and anglesite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Linarite (8) ] | ||||||||||
| Quick search: [ All Linarite samples (3) ] | ||||||||||
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Lindgrenite RRUFF ID: R050213 |
Ideal Chemistry: Cu2+3(Mo6+O4)2(OH)2 |
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Locality: Chuquicamata mine, Calama, Antofagasta Province, Chile Source: John Dagenais Owner: RRUFF Description: Green tabular single crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Quick search: [ All Lindgrenite samples (3) ] | ||||||||||
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Lindgrenite RRUFF ID: R060241 |
Ideal Chemistry: Cu2+3(Mo6+O4)2(OH)2 |
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Locality: San Samuel mine, Carrera Pinto, Chile Source: Rock Currier Owner: RRUFF Description: Dark green tabular crystals associated with antlerite, pseudomalachite, albite, dravite and monazite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Quick search: [ All Lindgrenite samples (3) ] | ||||||||||
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Lindgrenite RRUFF ID: R110061 |
Ideal Chemistry: Cu2+3(Mo6+O4)2(OH)2 |
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Locality: Childs Aldwinkle mine, Copper Creek, Pinal County, Arizona, USA Source: Ron Gibbs Owner: RRUFF Description: Pale green needles Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Quick search: [ All Lindgrenite samples (3) ] | ||||||||||
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Línekite RRUFF ID: R141026 |
Ideal Chemistry: K2Ca3[(U6+O2)(CO3)3]2·8H2O |
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Locality: Svornost Mine, Jáchymov, Krušné Hory Mts, Karlovy Vary, Bohemia, Czech Republic Source: William W. Pinch Owner: RRUFF Description: Light green tabular crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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Liottite RRUFF ID: R120045 |
Ideal Chemistry: Na16Ca8Si18Al18O72(S6+O4)5Cl4 |
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Locality: Case Collina (Toscopomici quarry), Pitigliano, Grosseto Province, Tuscany, Italy Source: R. Van Dommelen Owner: RRUFF Description: Pseudhexagonal colorless crystals, associated with grossular Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ cancrinite-sodalite (37) ] | ||||||||||
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Lipscombite RRUFF ID: R220008 |
Ideal Chemistry: Fe2+Fe3+2(PO4)2(OH)2 |
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Locality: Silver Coin Mine, Valmy, Iron Point Mining District, Humboldt County, Nevada, USA Source: Ron Gibbs Owner: RRUFF Description: euhedral green crystals on perhamite. Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Lipscombite (1) ] | ||||||||||
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Lipuite RRUFF ID: R140946 |
Ideal Chemistry: KNa8Mn3+5Mg0.5(Si12O30(OH)4)(PO4)O2(OH)2·4H2O |
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Locality: N'Chwaning III mine, Kalahari manganese field, Northern Cape Province, South Africa Source: Jaco and Tania Janse van Nieuwenhuizen Owner: RRUFF Description: Dark reddish brown massive crystalline, associated with sugilite (R130754) 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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Liroconite RRUFF ID: R050535 |
Ideal Chemistry: Cu2+2AlAs5+O4(OH)4·4H2O |
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Locality: Wheal Gorland, St. Day, Cornwall, England Source: University of Arizona Mineral Museum 291 Owner: RRUFF Description: Blue tabular crystals Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Mineral Group: [ Liroconite (1) ] | ||||||||||
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Liskeardite RRUFF ID: R060768 |
Ideal Chemistry: (Al,Fe3+)32(As5+O4)18(OH)42(H2O)22·52H2O |
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Locality: Penberthy Croft mine, St. Hilary, Cornwall, England Source: Michael Scott S100935 Owner: RRUFF Description: White fibrous earthy crust Status: The identification of this mineral is not yet confirmed. |
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Litharge RRUFF ID: R060959 |
Ideal Chemistry: Pb2+O |
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Locality: Langban, Filipstad, Varmland, Sweden Source: Michael Scott S101289 Owner: RRUFF Description: Red to red-orange crusts associated with black jacobsite and calcite Status: The identification of this mineral is not yet confirmed. |
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Lithiomarsturite RRUFF ID: R100094 |
Ideal Chemistry: LiCaMn2+3Si5O14(OH) |
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Locality: Foote mine, Kings Mountain, North Carolina, USA Source: Owner: RRUFF Description: Tan colored prismatic crystals, associated with brannockite, fluorapatite, albite, bavenite, and pyrite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Rhodonite (16) ] | ||||||||||
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Lithiophilite RRUFF ID: R070303 |
Ideal Chemistry: LiMn2+PO4 |
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Locality: Vittaniemi, Erajarvi, Orivesi, Etela-Suomen Laani, Finland Source: James Shigley Owner: RRUFF Description: Yellowish brown massive associated with muscovite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Olivine (61) ] | ||||||||||
| Quick search: [ All Lithiophilite samples (2) ] | ||||||||||
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Lithiophilite RRUFF ID: R100096 |
Ideal Chemistry: LiMn2+PO4 |
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Locality: Foote mine, Kings Mountain, North Carolina, USA Source: Owner: RRUFF Description: Parallel aggregate of pale pink acicular crystals, associated with quartz, muscovite, and elongated platy bertrandite, R110025. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Olivine (61) ] | ||||||||||
| Quick search: [ All Lithiophilite samples (2) ] | ||||||||||
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Lithiophorite RRUFF ID: R070083 |
Ideal Chemistry: (Al,Li)Mn4+O2(OH)2 |
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Locality: Sausalito Road Quarry, Sausalito, Marine County, California, USA Source: James Shigley Owner: RRUFF Description: Aggregates of shiny black spheres Status: The identification of this mineral is not yet confirmed. |
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Lithiophosphate RRUFF ID: R100092 |
Ideal Chemistry: Li3PO4 |
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Locality: Cachoeira mine, Itinga, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Colorless fragments and prismatic crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Lithiotantite RRUFF ID: R100165 |
Ideal Chemistry: LiTa5+3O8 |
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Locality: Murundu mine, Jenipapo district, Itinga, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Brown bladed crystals associated with reddish brown prismatic tantalite, and black cassiterite. Used in the Menezes et al (2012) study. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Columbite (32) ] | ||||||||||
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Litidionite RRUFF ID: R130088 |
Ideal Chemistry: KNaCu2+Si4O10 |
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Locality: Mt Vesuvius, Napoli, Italy Source: Rock Currier Owner: RRUFF Description: Blue to green glassy, massive. The two larger fragments are from the 1880 eruption. The smaller fragment is from 1873. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Litidionite (3) ] | ||||||||||
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Liudongshengite RRUFF ID: R180016 |
Ideal Chemistry: Zn2+4Cr3+2(OH)12(CO3)·3H2O |
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Locality: 79 mine, Gila Co., Arizona, USA Source: Ron Gibbs Owner: RRUFF Description: Pinkish hexagonal thin platy crystals, associated with cerussite, malachite, rosasite, hemimorphite, mimetite, wulfenite, fornacite, and rarely linarite and kuksite. 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: [ Hydrotalcite (22) ] | ||||||||||
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Livingstonite RRUFF ID: R050427 |
Ideal Chemistry: Hg2+Sb3+4S2-6(S2)2- |
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Locality: Huitzuco, Guerrero, Mexico Source: University of Arizona Mineral Museum 13426 Owner: RRUFF Description: Aggregate of blackish-gray elongated crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Livingstonite samples (2) ] | ||||||||||
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Livingstonite RRUFF ID: R050453 |
Ideal Chemistry: Hg2+Sb3+4S2-6(S2)2- |
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Locality: Huitzuco, Guerrero, Mexico Source: University of Arizona Mineral Museum 13667 Owner: RRUFF Description: Aggregate of gray columnar crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Livingstonite samples (2) ] | ||||||||||
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Lizardite RRUFF ID: R060006 |
Ideal Chemistry: Mg3Si2O5(OH)4 |
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Locality: Snarum, Norway Source: University of Arizona Mineral Museum 2896 Owner: RRUFF Description: Green blebs of fine-grained serpentine habit, polytype 1T, associated with pearly hydrotalcite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Groups: [ serpentine (12) ] [ Clay (86) ] | ||||||||||
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Lobanovite RRUFF ID: R120068 |
Ideal Chemistry: K2Na(Fe2+4Mg2Na)Ti4+2(Si4O12)2O2(OH)4 |
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Locality: Apatitovaya Mt., Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Source: Donald Doell Owner: RRUFF Description: Massive transparent golden sheets associated with light green aegirine Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Groups: [ astrophyllite (11) ] [ Devitoite (2) ] | ||||||||||
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Lokkaite-(Y) RRUFF ID: R061092 |
Ideal Chemistry: CaY4(CO3)7·9H2O |
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Locality: Mitsukoshi, Hizen-cho, Karatsu City, Saga Prefecture, Japan Source: Marcus Origlieri Owner: RRUFF Description: Pale pink radial aggregate of blades Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Tengerite (3) ] | ||||||||||
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Löllingite RRUFF ID: R060185 |
Ideal Chemistry: Fe3+(As2)3- |
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Locality: MW Claim, Seagull Batholith, Cassiar Mountains, Yukon, Canada Source: Lloyd Twaites Owner: RRUFF Description: Steel-gray metallic fragments Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Lollingite (8) ] | ||||||||||
| Quick search: [ All Löllingite samples (3) ] | ||||||||||
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Löllingite RRUFF ID: R060668 |
Ideal Chemistry: Fe3+(As2)3- |
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Locality: Aghbar near Bou-Azzer, Morocco Source: Michael Scott S101325 Owner: RRUFF Description: Gray metallic spears radiating in spherical aggregates, associated with arsenopyrite and skutterudite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Lollingite (8) ] | ||||||||||
| Quick search: [ All Löllingite samples (3) ] | ||||||||||
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Löllingite RRUFF ID: R070592 |
Ideal Chemistry: Fe3+(As2)3- |
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Locality: Ebisu mine, Hirukawa, Gifu Prefecture, Honshu, Japan Source: James Shigley Owner: RRUFF Description: Steel gray 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 Group: [ Lollingite (8) ] | ||||||||||
| Quick search: [ All Löllingite samples (3) ] | ||||||||||
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Lombardoite RRUFF ID: R220033 |
Ideal Chemistry: Ba2Mn3+(As5+O4)2(OH) |
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Locality: Valletta mine, Maira Valley, Piedmont, Italy Source: Fernando Cámara Owner: Fernando Cámara Description: Dark red platy tablets associated with quartz. Type sample from Cámara et al (2022) Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Brackebuschite (17) ] | ||||||||||
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Lomonosovite RRUFF ID: R070465 |
Ideal Chemistry: Na6Na2Ti4+2Na2Ti4+2(Si2O7)2(PO4)2O4 |
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Locality: Apatitovyi Tsirk (Apatite Circus), Rasvumchorr Mountain, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Source: Michael Scott S105790 Owner: RRUFF Description: Light tan platy crystals associated with orthoclase and lamprophyllite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Epistolite (9) ] | ||||||||||
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Loomisite RRUFF ID: R210017 |
Ideal Chemistry: Ba[Be2P2O8]·H2O |
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Locality: Big Chief mine, Pennington County, South Dakota, USA Source: Tom Loomis TL256A Owner: RRUFF Description: White acicular divergent crystals, associated with white bladed dondoellite, and yellow needle earlshannonite. Status: unconfirmed |
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Loparite-(Ce) RRUFF ID: R070251 |
Ideal Chemistry: (Na,Ce3+,Sr)(Ce3+,Th4+)(Ti4+,Nb5+)2O6 |
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Locality: Maly Mannepakhk Mt (Malyi Mannepakhk Mt), Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Source: Michael Scott S105531 Owner: RRUFF Description: Black interpenetrating cubes associated with green aegirine and sugary microcline Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Perovskite (44) ] | ||||||||||
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Lópezite RRUFF ID: R070043 |
Ideal Chemistry: K2Cr6+2O7 |
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Locality: Synthetic, made in the Czech Republic Source: Michael Scott S101397 Owner: RRUFF Description: Red single crystal Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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Lorándite RRUFF ID: R060961 |
Ideal Chemistry: Tl1+As3+S2-2 |
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Locality: Allchar, Macedonia Source: Michael Scott S101334 Owner: RRUFF Description: Deep red prisms or tabular crystals, associated with prismatic realgar. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Lorándite samples (2) ] | ||||||||||
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Lorándite RRUFF ID: R110055 |
Ideal Chemistry: Tl1+As3+S2-2 |
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Locality: Xingren County, Qianxi'nan Autonomous Prefecture, Guizhou Province, China Source: Don Doell Owner: RRUFF Description: Red platy crystals and cleavages Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Lorándite samples (2) ] | ||||||||||
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Lorenzenite RRUFF ID: R060960 |
Ideal Chemistry: Na2Ti4+2O3(Si2O6) |
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Locality: Khibiny Massif, Kola Peninsula, Russia Source: Michael Scott S101383 Owner: RRUFF Description: Dark brown prismatic single crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Lorenzenite samples (2) ] | ||||||||||
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Lorenzenite RRUFF ID: R130051 |
Ideal Chemistry: Na2Ti4+2O3(Si2O6) |
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Locality: Mont Saint-Hilaire, Rouville RCM, Monteregie, Quebec, Canada Source: Don Doell Owner: RRUFF Description: A jumbled mass of colorless hair-like crystals associated with black arfvedsonite and white microcline Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Lorenzenite samples (2) ] | ||||||||||
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Lotharmeyerite RRUFF ID: R060862 |
Ideal Chemistry: CaZn2+2(As5+O4)2·2H2O |
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Locality: Mapimi, Durango, Mexico Source: Michael Scott S100871 Owner: RRUFF Description: Dark reddish brown bladed crystals, crystal structure is reported by Yang et al (2012) Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Natrochalcite (13) ] | ||||||||||
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Lourenswalsite RRUFF ID: R060468 |
Ideal Chemistry: (K,Ba)2Ti4+4(Si,Al)6O14(OH)12 |
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Locality: Diamond Jo Quarry, Magnet Cove, Hot Spring County, Arkansas, USA Source: Michael Scott S100196 Owner: RRUFF Description: Rosettes of gray platy crystals Status: The identification of this mineral is not yet confirmed. |
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Lovozerite RRUFF ID: R080107 |
Ideal Chemistry: Na3CaZr4+Si6O15(OH)3 |
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Locality: Mont Saint-Hilaire, Quebec, Canada Source: William W. Pinch Owner: RRUFF Description: Small tan blocky crystals associated with sodalite and microcline Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Groups: [ Lovozerite (3) ] [ Zirsinalite–Lovozerite (3) ] | ||||||||||
| Quick search: [ All Lovozerite samples (2) ] | ||||||||||
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Lovozerite RRUFF ID: R120159 |
Ideal Chemistry: Na3CaZr4+Si6O15(OH)3 |
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Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Source: Donald Doell Owner: RRUFF Description: Yellow massive on ussingite (R140806). Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Groups: [ Lovozerite (3) ] [ Zirsinalite–Lovozerite (3) ] | ||||||||||
| Quick search: [ All Lovozerite samples (2) ] | ||||||||||
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Luanheite RRUFF ID: R060677 |
Ideal Chemistry: Ag3Hg |
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Locality: Elisa de Bordos mine, Tierra Amarilla, Chile Source: Bob Jenkins Owner: RRUFF Description: White and black tarnish massive mixture Status: The identification of this mineral is not yet confirmed. |
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Ludjibaite RRUFF ID: R060413 |
Ideal Chemistry: Cu2+5(PO4)2(OH)4 |
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Locality: Sossego, Carajas, Brazil Source: Bob Jenkins Owner: RRUFF Description: Bluish-green groups of colliform aggregates Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Medenbachite (1) ] | ||||||||||
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Ludlamite RRUFF ID: R040152 |
Ideal Chemistry: Fe2+3(PO4)2·4H2O |
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Locality: Cobalt, Lemhi County, Idaho, USA Source: University of Arizona Mineral Museum 15641 Owner: RRUFF Description: Green tabular single crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Ludlamite samples (3) ] | ||||||||||
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Ludlamite RRUFF ID: R060485 |
Ideal Chemistry: Fe2+3(PO4)2·4H2O |
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Locality: Blackbird District, Lehmi County, Idaho, USA Source: Michael Scott S100357 Owner: RRUFF Description: Green tabular crystals associated with siderite, pyrite and quartz Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Quick search: [ All Ludlamite samples (3) ] | ||||||||||
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Ludlamite RRUFF ID: R090071 |
Ideal Chemistry: Fe2+3(PO4)2·4H2O |
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Locality: Cigana Mine (ex-Jocão Mine), Galiléia, Minas Gerais Brazil Source: Royal Ontario Museum M54960 Owner: RRUFF Description: Groups of colorless tabular crystals on reddish-brown reddingite R090069, associated with pink hureaulite R090070. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Quick search: [ All Ludlamite samples (3) ] | ||||||||||
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Ludlockite RRUFF ID: R100176 |
Ideal Chemistry: Pb2+Fe3+4As3+10O22 |
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Locality: Tsumeb, Namibia Source: William W. Pinch Owner: RRUFF Description: Red fibrous crystals that display significant flexibility Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Ludwigite RRUFF ID: R060010 |
Ideal Chemistry: Mg2Fe3+O2(BO3) |
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Locality: Victoria Quarry, Riverside, California, USA Source: University of Arizona Mineral Museum 9094 Owner: RRUFF Description: Black elongated prismatic crystals, associated with pale yellow clinohumite on white calcite matrix Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Ludwigite (5) ] | ||||||||||
| Quick search: [ All Ludwigite samples (2) ] | ||||||||||
)
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Ludwigite RRUFF ID: R060844 |
Ideal Chemistry: Mg2Fe3+O2(BO3) |
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Locality: Crestmore, California, USA Source: Bob Jenkins Owner: RRUFF Description: Black elongated prismatic crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Ludwigite (5) ] | ||||||||||
| Quick search: [ All Ludwigite samples (2) ] | ||||||||||
)
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Lueshite RRUFF ID: R090025 |
Ideal Chemistry: NaNb5+O3 |
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Locality: Lueshe carbonatite, Kivu Province, Democratic Republic of the Congo Source: Karl Russ Owner: RRUFF Description: Black cubes Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Perovskite (44) ] | ||||||||||
)
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Luetheite RRUFF ID: R060088 |
Ideal Chemistry: Cu2+Al(As5+O4)(OH)2 |
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Locality: Alum Gulch, Patagonia, Arizona, USA Source: Andy Anderson Owner: RRUFF Description: Pale blue fine-grained Status: The identification of this mineral has been confirmed only by chemical analysis |
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| Mineral Group: [ Chenevixite (3) ] | ||||||||||
)
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Lulzacite RRUFF ID: R110147 |
Ideal Chemistry: Sr2Fe2+3Al4(PO4)4(OH)10 |
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Locality: Saint-Aubin-des-Châteaux, Loire-Atlantique, France Source: Olivier Pourret Owner: RRUFF Description: Gray glassy and massive, associated with siderite and pyrite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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)
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Lüneburgite RRUFF ID: R140143 |
Ideal Chemistry: Mg3[B2(OH)6(PO4)2]·6H2O |
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Locality: Lüneburger Kalkberg, Lüneburg, Lower Saxony, Germany Source: Rock Currier Owner: RRUFF Description: Massive, vitreous, white with silky sheen, with minor limonitic staining Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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)
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Luzonite RRUFF ID: R060390 |
Ideal Chemistry: Cu3AsS2-4 |
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Locality: Bern-Shan Pit, Chinkuashi mine, Taipei, Taiwan, Republic of China Source: Michael Scott S100181 Owner: RRUFF Description: Black coarse massive with two directions of obvious cleavage Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Groups: [ Stannite (11) ] [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Luzonite samples (2) ] | ||||||||||
)
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Luzonite RRUFF ID: R070247 |
Ideal Chemistry: Cu3AsS2-4 |
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Locality: Huaron Mining District, San Jose de Huayllay district, Cerro de Pasco, Alcides Carrión Province, Pasco department, Peru Source: Michael Scott S105151 Owner: RRUFF Description: Black metallic crystals with pinkish hue. The electron microscope image shows three distinct fine-scale phases related to As and Sb content Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Groups: [ Stannite (11) ] [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Luzonite samples (2) ] | ||||||||||
)
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Macdonaldite RRUFF ID: R060770 |
Ideal Chemistry: BaCa4Si16O36(OH)2·10H2O |
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Locality: Rush Creek, Fresno County, California, USA Source: Michael Scott S101090 Owner: RRUFF Description: Radiating aggregates of white platy crystals Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Rhodesite (5) ] | ||||||||||
)
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Macfallite RRUFF ID: R060391 |
Ideal Chemistry: Ca2Mn3+3(SiO4)(Si2O7)(OH)3 |
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Locality: near Manganese Lake, Copper Harbor, Keweenaw County, Michigan, USA Source: Michael Scott S100092 Owner: RRUFF Description: Reddish-brown radial aggregate of bladed crystals associated with braunite, quartz, calcite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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)
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Mackayite RRUFF ID: R060592 |
Ideal Chemistry: Fe3+Te4+2O5(OH) |
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Locality: Lone Pine mine, Lone Pine Hill area, Wilcox District, Catron County, New Mexico, USA Source: Michael Scott S100792 Owner: RRUFF Description: Greenish-brown octahedral crystals associated with quartz 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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Mackinawite RRUFF ID: R060388 |
Ideal Chemistry: (Fe,Ni)1-1.07S |
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Locality: Hitura, Finland Source: Michael Scott S100089 Owner: RRUFF Description: Bronze thin tabular crystals in parallel packing Status: The identification of this mineral is not yet confirmed. |
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| Quick search: [ All Mackinawite samples (2) ] | ||||||||||
)
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Mackinawite RRUFF ID: R070302 |
Ideal Chemistry: (Fe,Ni)1-1.07S |
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Locality: Wannaway Prospect, near Kalgoorlie, Western Australia, Australia Source: James Shigley Owner: RRUFF Description: Bronze metallic massive, drill core Status: The identification of this mineral is not yet confirmed. |
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| Quick search: [ All Mackinawite samples (2) ] | ||||||||||
)
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Macquartite RRUFF ID: R210020 |
Ideal Chemistry: Cu2+2Pb2+7(Cr6+O4)4(SiO4)2(OH)2 |
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Locality: Mammoth-Sth. Anthony M., Tiger, Pinal County, Arizona, USA Source: Bob Jenkins Owner: RRUFF Description: Orange euhedral prismatic crystals in quartz vugs, associated with blue-green prismatic diaboleite, yellow-orange platy wulfenite, dark grey vauquelinite. Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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)
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Magadiite RRUFF ID: R060994 |
Ideal Chemistry: Na2Si14O28(OH)2·8H2O |
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Locality: Trinity Lake, Trinity County, California, USA Source: Bob Jenkins Owner: RRUFF Description: White compacted fine-grained silt Status: The identification of this mineral is not yet confirmed. |
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)
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Maghemite RRUFF ID: R140712 |
Ideal Chemistry: (Fe3+0.67◻0.33)Fe3+2O4 |
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Locality: Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany Source: Rock Currier Owner: RRUFF Description: Black aggregate of small to fine grains. Fd3m symmetry Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
)
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Magnesio-fluoro-arfvedsonite RRUFF ID: R050515 |
Ideal Chemistry: NaNa2(Mg4Fe3+)Si8O22F2 |
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Locality: unknown Source: Frank Hawthorne Owner: RRUFF Description: Numerous small dark green fragments 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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Magnesio-fluoro-hastingsite RRUFF ID: R141082 |
Ideal Chemistry: NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
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Locality: Caspar quarry, Bellerberg volcano, Mayen, Eifel, Germany Source: Ch. and H. Schäfer Owner: RRUFF Description: Euhedral brown crystal embedded in matrix Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-fluoro-hastingsite samples (3) ] | ||||||||||
)
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Magnesio-fluoro-hastingsite RRUFF ID: R141098 |
Ideal Chemistry: NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
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Locality: Uroi Hill (Arany Hill), Simeria, Hunedoara Co., Romania Source: Ch. and H. Schäfer Owner: RRUFF Description: Prismatic brown to orange-brown crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-fluoro-hastingsite samples (3) ] | ||||||||||
)
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Magnesio-fluoro-hastingsite RRUFF ID: R141099 |
Ideal Chemistry: NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
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Locality: Mt. Vesuvius, Naples, Campania, Italy Source: Ch. and H. Schäfer Owner: RRUFF Description: Prismatic brown crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-fluoro-hastingsite samples (3) ] | ||||||||||
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Magnesio-foitite RRUFF ID: X050186 |
Ideal Chemistry: ◻(Mg2Al)Al6(Si6O18)(BO3)3(OH)3OH |
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Locality: Honshu, Japan Source: Caltech Owner: Caltech Description: Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ tourmaline (49) ] | ||||||||||
)
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Magnesio-hastingsite RRUFF ID: R040010 |
Ideal Chemistry: NaCa2(Mg4Fe3+)Si6Al2O22(OH)2 |
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Locality: Amity, New York, USA Source: University of Arizona Mineral Museum 4231 Owner: RRUFF Description: Group of black prismatic crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-hastingsite samples (3) ] | ||||||||||
)
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Magnesio-hastingsite RRUFF ID: R070145 |
Ideal Chemistry: NaCa2(Mg4Fe3+)Si6Al2O22(OH)2 |
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Locality: Niaslo, Basha Valley, Baltistan, Northern Areas, Pakistan Source: William W. Pinch Owner: RRUFF Description: Black cleavage fragments 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) ] | ||||||||||
| Quick search: [ All Magnesio-hastingsite samples (3) ] | ||||||||||
)
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Magnesio-hastingsite RRUFF ID: R070288 |
Ideal Chemistry: NaCa2(Mg4Fe3+)Si6Al2O22(OH)2 |
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Locality: Dallas Gem Mine (Gem Mine; Benitoite Mine), New Idria District, San Benito County, California, USA Source: Michael Scott S104903 Owner: RRUFF Description: Dark brown to black prismatic crystals frozen in albite 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) ] | ||||||||||
| Quick search: [ All Magnesio-hastingsite samples (3) ] | ||||||||||
)
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Magnesio-riebeckite RRUFF ID: R060037 |
Ideal Chemistry: ◻Na2(Mg3Fe3+2)Si8O22(OH)2 |
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Locality: Pollone, Piedmont, Italy Source: University of Arizona Mineral Museum 4236 Owner: RRUFF Description: Black bladed single crystals embedded in a white matrix of calcite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-riebeckite samples (2) ] | ||||||||||
)
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Magnesio-riebeckite RRUFF ID: R070002 |
Ideal Chemistry: ◻Na2(Mg3Fe3+2)Si8O22(OH)2 |
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Locality: Alto Chapare, Cochabamba Department, Bolivia Source: Michael Scott S100846 Owner: RRUFF Description: Light bluish gray fibrous cloth-like fabric Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ amphibole (107) ] | ||||||||||
| Quick search: [ All Magnesio-riebeckite samples (2) ] | ||||||||||
)
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Magnesioalterite RRUFF ID: R180015 |
Ideal Chemistry: Mg2Fe3+4(S6+O4)4((C2)6+O4)2(OH)4·17H2O |
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Locality: Near Marble Canyon, Coconino County, Arizona, USA Source: Malcom Alter Owner: RRUFF Description: Isolated or aggregates of yellow brown prismatic crystals on petrified wood, associated with greenish prismatic alterite, gypsum, alunogen, and sulfur. Type sample. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Groups: [ Alterite (2) ] [ Oxalate (13) ] | ||||||||||
)
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Magnesioaubertite RRUFF ID: R060344 |
Ideal Chemistry: MgAl(S6+O4)2Cl·14H2O |
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Locality: Grotta de Faraglione, Vulcano, Italy Source: Michael Scott S100113 Owner: RRUFF Description: Blue massive with a parallel fibrous texture associated with white pickeringite, co-type specimen Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Aubertite (2) ] | ||||||||||
)
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Magnesiocarpholite RRUFF ID: R140873 |
Ideal Chemistry: MgAl2Si2O6(OH)4 |
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Locality: Sengelbach valley, Biesenrode, Wippra Metamorphic Zone, Harz, Saxony-Anhalt, Germany Source: Stefan Schorn Owner: RRUFF Description: Green to gray fibers Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Carpholite (3) ] | ||||||||||
)
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Magnesiochlorophoenicite RRUFF ID: R140719 |
Ideal Chemistry: Mg3Zn2+2As5+O4(OH,O)6 |
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Locality: Sterling mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA Source: Rock Currier Owner: RRUFF Description: Radial tufts of vitreous white acicular crystals on typical Franklin Hill zinc ore. The crystals are twinned by a 2-fold axis parallel to a*. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Chlorophoenicite (2) ] | ||||||||||
)
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Magnesiochromite RRUFF ID: R050399 |
Ideal Chemistry: MgCr3+2O4 |
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Locality: Troodos Mountains, Cyprus Source: Andy McCarthy Owner: RRUFF Description: Black grains 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 Magnesiochromite samples (3) ] | ||||||||||
)
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Magnesiochromite RRUFF ID: R060796 |
Ideal Chemistry: MgCr3+2O4 |
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Locality: State Line Chrome mine (Low's mine), Cecil County, Maryland, USA Source: California Institute of Technology 10576 Owner: RRUFF Description: Black massive 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 Magnesiochromite samples (3) ] | ||||||||||
)
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Magnesiochromite RRUFF ID: R060797 |
Ideal Chemistry: MgCr3+2O4 |
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Locality: Benbow mine, Stillwater Complex, Mount Wood area, Stillwater County, Montana, USA Source: California Institute of Technology 11227 Owner: RRUFF Description: Black granular massive 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 Magnesiochromite samples (3) ] | ||||||||||
)
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Magnesiocopiapite RRUFF ID: R060155 |
Ideal Chemistry: MgFe3+4(S6+O4)6(OH)2·20H2O |
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Locality: Denver mine, Santa Cruz County, Arizona, USA Source: University of Arizona Mineral Museum 12789 Owner: RRUFF Description: Yellow fine-grained efflorescence Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Copiapite (4) ] | ||||||||||
)
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Magnesiocoulsonite RRUFF ID: R070218 |
Ideal Chemistry: MgV3+2O4 |
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Locality: Pereval Marble Quarry, Sludyanka (Slyudyanka), Baikal area, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Source: Michael Scott S100447 Owner: RRUFF Description: Black grains with internal hints of red Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
)
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Magnesioferrite RRUFF ID: R060869 |
Ideal Chemistry: MgFe3+2O4 |
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Locality: Langban, Filipstad, Varmland, Sweden Source: Michael Scott S101024 Owner: RRUFF Description: Black semimetallic massive 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 Magnesioferrite samples (2) ] | ||||||||||
)
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Magnesioferrite RRUFF ID: R070127 |
Ideal Chemistry: MgFe3+2O4 |
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Locality: Langban, Filipstad, Varmland, Sweden Source: Michael Scott S100406 Owner: RRUFF Description: Black poorly formed octahedral crystals with deep red highlites, associated with hematite and calcite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Spinel (66) ] | ||||||||||
| Quick search: [ All Magnesioferrite samples (2) ] | ||||||||||
)
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Magnesiohulsite RRUFF ID: R070223 |
Ideal Chemistry: Mg2Fe3+O2(BO3) |
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Locality: Iten'yurginskoye Deposit, Chukotka (Tchukotka) Okrug, Chukot Peninsula, Far-Eastern Region, Russia Source: Michael Scott S100449 Owner: RRUFF Description: Radiating black fibrous crystals Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Hulsite (4) ] | ||||||||||
)
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Magnesiokoritnigite RRUFF ID: R150002 |
Ideal Chemistry: Mg(As5+O3OH)·H2O |
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Locality: Torrecillias mine, Sala Grande, Tamarugal Province, Chile Source: Bob Jenkins Owner: RRUFF Description: Colorless tabular crystals Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Koritnigite (3) ] | ||||||||||
)
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Magnesiotaaffeite-2N'2S RRUFF ID: R070555 |
Ideal Chemistry: Mg3BeAl8O16 |
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Locality: Tunduru, Tanzania Source: www.multicolour.com Owner: RRUFF Description: Slightly pink cut gemstone, 0.15 ct. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Quick search: [ All Magnesiotaaffeite-2N'2S samples (3) ] | ||||||||||
)
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Magnesiotaaffeite-2N'2S RRUFF ID: X090001 |
Ideal Chemistry: Mg3BeAl8O16 |
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Locality: Ratnapura, Sri Lanka Source: William W. Pinch Owner: Bill Pinch Description: Dark grey with a hint of purple, flattened tabular hexagonal crystal Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Magnesiotaaffeite-2N'2S samples (3) ] | ||||||||||
)
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Magnesiotaaffeite-2N'2S RRUFF ID: R090035 |
Ideal Chemistry: Mg3BeAl8O16 |
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Locality: Ratnapura District, Sri-Lanka Source: William W. Pinch Owner: RRUFF Description: Rounded hexagonal purple crystal with pyramidal terminations Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Magnesiotaaffeite-2N'2S samples (3) ] | ||||||||||
)
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Magnesiotaaffeite-6N'3S RRUFF ID: X070005 |
Ideal Chemistry: Mg2BeAl6O12 |
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Locality: Tunduru, Tanzania Source: www.multicolour.com Owner: www.multicolour.com Description: Pale lavendar cut gemstone, 0.65 cts, formerly known as musgravite-18R Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Magnesiotaaffeite-6N'3S samples (2) ] | ||||||||||
)
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Magnesiotaaffeite-6N'3S RRUFF ID: R090019 |
Ideal Chemistry: Mg2BeAl6O12 |
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Locality: Ratnapura District, Sri Lanka Source: William W. Pinch Owner: Bill Pinch Description: Greyish purple flattened tabular hexagonal crystal Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Magnesiotaaffeite-6N'3S samples (2) ] | ||||||||||
)
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Magnesite RRUFF ID: R040114 |
Ideal Chemistry: MgCO3 |
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Locality: Snarum, Norway Source: University of Arizona Mineral Museum 7562 Owner: RRUFF Description: Tan colored cleavage fragment 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: X050115 |
Ideal Chemistry: MgCO3 |
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Locality: Serra Das Egnas, Brazil Source: CIT 2123 Owner: Caltech Description: Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ Calcite (36) ] | ||||||||||
| Quick search: [ All Magnesite samples (5) ] | ||||||||||
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Magnesite RRUFF ID: X050116 |
Ideal Chemistry: MgCO3 |
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Locality: Gustine Merced County, California, USA Source: CIT 1450 Owner: Caltech Description: Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ Calcite (36) ] | ||||||||||
| Quick search: [ All Magnesite samples (5) ] | ||||||||||
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