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Important Update News
The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.
The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.
We are grateful to NASA for the funding of this effort.
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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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Meliphanite RRUFF ID: R060786 |
Ideal Chemistry: Ca4(Na,Ca)4Be4AlSi7O24(F,O)4 |
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Locality: Brevig, Norway Source: Michael Scott S101068 Owner: RRUFF Description: Greenish-yellow tabular crystal Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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Mellite RRUFF ID: R070574 |
Ideal Chemistry: Al2C6(COO)6·16H2O |
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Locality: Tuscany, Italy Source: James Shigley Owner: RRUFF Description: Pale yellow prismatic crystal fragment Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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Mendipite RRUFF ID: R050669 |
Ideal Chemistry: Pb2+3O2Cl2 |
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Locality: Mendip Hills, Higher Pits, Somerset, England Source: University of Arizona Mineral Museum 9713 Owner: RRUFF Description: Colorless coarsely fibrous aggregate Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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Mendozavilite-NaCu RRUFF ID: R120038 |
Ideal Chemistry: [Na2(H2O)15Cu2+(H2O)6][Mo6+8P2Fe3+3O34(OH)3] |
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Locality: Lomas Bayas mine, Baquedano, Antofagasta Province, Antofagasta Region, Chile Source: Bob Jenkins Owner: RRUFF Description: Bright green massive Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Betpakdalite (4) ] | ||||||||||
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Mendozite RRUFF ID: R070315 |
Ideal Chemistry: NaAl(S6+O4)2·11H2O |
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Locality: Gold Bottom mine, Inyo County, California, USA Source: James Shigley Owner: RRUFF Description: Colorless acicular to fibrous crystals associated with gypsum Status: The identification of this mineral is not yet confirmed. |
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Meneghinite RRUFF ID: R050444 |
Ideal Chemistry: Pb2+13Cu1+Sb3+7S2-24 |
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Locality: Bottino, Tucsany, Italy Source: Peter Megaw Owner: RRUFF Description: Lead-gray metallic slender prismatic and striated crystal Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Meneghinite (7) ] | ||||||||||
| Quick search: [ All Meneghinite samples (2) ] | ||||||||||
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Meneghinite RRUFF ID: R070093 |
Ideal Chemistry: Pb2+13Cu1+Sb3+7S2-24 |
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Locality: Kalkar Quarry, Santa Cruz, Santa Cruz County, California, USA Source: James Shigley Owner: RRUFF Description: Elongated silver-gray metallic crystals embedded in quartz and 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: [ Meneghinite (7) ] | ||||||||||
| Quick search: [ All Meneghinite samples (2) ] | ||||||||||
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Menezesite RRUFF ID: R060979 |
Ideal Chemistry: Ba3MgZr4+4Nb5+12O42·12H2O |
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Locality: Jacupiranga mine, Cajati, Sao Paulo, Brazil Source: Michael Scott S100864 Owner: RRUFF Description: Rootbeer colored dodecahedra associated with calcite, phlogopite, clinohumite, pyrite and magnetite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Menezesite (2) ] | ||||||||||
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Mercallite RRUFF ID: R070072 |
Ideal Chemistry: KHS6+O4 |
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Locality: crater of Mount Vesuvius, Campagnano di Roma, Italy Source: Michael Scott S105078 Owner: RRUFF Description: Globular aggregate of white grains, similar in appearance to a snowball Status: The identification of this mineral is not yet confirmed. |
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Mercury RRUFF ID: R070277 |
Ideal Chemistry: Hg |
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Locality: Socrates Mine, Sonoma County, California, USA Source: Michael Scott S105390 Owner: RRUFF Description: Grey metallic liquid spheres Status: The identification of this mineral is not yet confirmed. |
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Merlinoite RRUFF ID: R130095 |
Ideal Chemistry: K5Ca2(Si23Al9)O64·24H2O |
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Locality: Pollena quarry, Vesuvius, Napoli, Campania, Italy Source: Donald Doell Owner: RRUFF Description: Sprays and clusters of colorless prismatic crystals associated with calcite. Merlinoite crystals are twinned with 90 deg rotations around c-axis. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Merrillite RRUFF ID: R150063 |
Ideal Chemistry: Ca9NaMg(PO4)7 |
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Locality: Suizhou L6 chondrite, Dayanpo, 12.5 km southeast of the city of Suizhou, Hubei Province, China (35°18’N, 113°35’E) Source: Xiande Xie and Xiangping Gu Owner: RRUFF Description: Colorless aggregates of irregular grains, associated with forsterite, enstatite, maskelynite, FeNi metal, troilite, chlorapatite, chromite and ilmenite. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Cerite (11) ] | ||||||||||
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Merwinite RRUFF ID: R070195 |
Ideal Chemistry: Ca3Mg(SiO4)2 |
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Locality: Commercial Quarry, Riverside County, California, USA Source: California Institute of Technology CIT-14405 Owner: RRUFF Description: Light gray massive Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Aphthitalite (3) ] | ||||||||||
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Mesolite RRUFF ID: R040139 |
Ideal Chemistry: Na2Ca2(Si9Al6)O30·8H2O |
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Locality: Lake Superior beach, 41 miles north of Tofte, Minnesota, USA Source: University of Arizona Mineral Museum 9618 Owner: RRUFF Description: Aggregate of white radiating thin acicular crystals. Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Natrolite (13) ] | ||||||||||
| Quick search: [ All Mesolite samples (3) ] | ||||||||||
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Mesolite RRUFF ID: R040140 |
Ideal Chemistry: Na2Ca2(Si9Al6)O30·8H2O |
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Locality: Challis, Idaho, USA Source: University of Arizona Mineral Museum 16169 Owner: RRUFF Description: White fibrous mass, associated with barrierite Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Natrolite (13) ] | ||||||||||
| Quick search: [ All Mesolite samples (3) ] | ||||||||||
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Mesolite RRUFF ID: R050013 |
Ideal Chemistry: Na2Ca2(Si9Al6)O30·8H2O |
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Locality: Poona, Maharashtra, India Source: University of Arizona Mineral Museum 10480 Owner: RRUFF Description: Clear to white elongated prismatic single crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Natrolite (13) ] | ||||||||||
| Quick search: [ All Mesolite samples (3) ] | ||||||||||
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Messelite RRUFF ID: R210009 |
Ideal Chemistry: Ca2Fe2+(PO4)2·2H2O |
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Locality: Palermo mine, Grafton Co., New Hampshire Source: Tom Loomis Owner: RRUFF Description: Aggregates of white to colorless bladed or thin-platy crystals, associated with vivianite and acicular strunzite. Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ fairfieldite (16) ] | ||||||||||
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Meta-autunite RRUFF ID: R050612 |
Ideal Chemistry: Ca(U6+O2)2(PO4)2·6H2O |
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Locality: Daybreak mine, Mt. Spokane, Spokane County, Washington, USA Source: Dave Bunk Minerals Owner: RRUFF Description: Green thin tabular crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ meta-autunite (5) ] | ||||||||||
| Quick search: [ All Meta-autunite samples (4) ] | ||||||||||
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Meta-autunite RRUFF ID: R060434 |
Ideal Chemistry: Ca(U6+O2)2(PO4)2·6H2O |
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Locality: Hyverneresse, Creuse, France Source: Michael Scott S100368 Owner: RRUFF Description: Yellow thin tabular crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ meta-autunite (5) ] | ||||||||||
| Quick search: [ All Meta-autunite samples (4) ] | ||||||||||
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Meta-autunite RRUFF ID: R060476 |
Ideal Chemistry: Ca(U6+O2)2(PO4)2·6H2O |
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Locality: San Pedro mine, Malacheta, Minas Gerais, Brazil Source: Michael Scott S100363 Owner: RRUFF Description: Book of yellowish-green thin tabular crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ meta-autunite (5) ] | ||||||||||
| Quick search: [ All Meta-autunite samples (4) ] | ||||||||||
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Meta-autunite RRUFF ID: R141039 |
Ideal Chemistry: Ca(U6+O2)2(PO4)2·6H2O |
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Locality: Spruce Pine District, Avery County, North Carolina, USA Source: Rob Lavinsky Owner: RRUFF Description: Yellow tabular crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ meta-autunite (5) ] | ||||||||||
| Quick search: [ All Meta-autunite samples (4) ] | ||||||||||
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Metaborite RRUFF ID: R130694 |
Ideal Chemistry: HBO2 |
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Locality: Chelkar salt dome, Aksai Valley, Aktobe Province, Kazakhstan Source: Rock Currier Owner: RRUFF Description: Colorless fragment Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Metacinnabar RRUFF ID: R060950 |
Ideal Chemistry: Hg2+S2- |
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Locality: Ryan mine, Contra Costa County, California, USA Source: Bob Jenkins Owner: RRUFF Description: Dark orange brown submetallic crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Metacinnabar samples (2) ] | ||||||||||
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Metacinnabar RRUFF ID: R180027 |
Ideal Chemistry: Hg2+S2- |
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Locality: Twin Creeks mine, Humboldt County, Nevada, USA Source: Joseph P. Becker Owner: RRUFF Description: Black to dark red octahedral or granular crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Metacinnabar samples (2) ] | ||||||||||
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Metaheinrichite RRUFF ID: R060778 |
Ideal Chemistry: Ba(U6+O2)2(As5+O4)2·8H2O |
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Locality: Schmiedestoll, Wittichen, Schwarzwald, Germany Source: Michael Scott S101284 Owner: RRUFF Description: Pale green thin tabular crystals with rectangular outline Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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Metahewettite RRUFF ID: R070199 |
Ideal Chemistry: CaV5+6O16·3H2O |
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Locality: Fish Creek Range, south of Eureka, Eureka County, Nevada, USA Source: James Shigley Owner: RRUFF Description: Red pulverulent coating Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Hewettite (4) ] | ||||||||||
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Metaköttigite RRUFF ID: R130695 |
Ideal Chemistry: (Zn2+,Fe3+)3(As5+O4)2·8(H2O,OH) |
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Locality: Ojuela mine, Mapimí, Municipio de Mapimí, Durango, Mexico Source: Rock Currier Owner: RRUFF Description: Dark green prismatic crystalline bundles Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Symplesite (4) ] | ||||||||||
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Metalodèvite RRUFF ID: R130693 |
Ideal Chemistry: Zn2+(U6+O2)2(As5+O4)2·10H2O |
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Locality: Riviéral, Lodève, Hérault, Languedoc-Roussillon, France Source: Rock Currier Owner: RRUFF Description: Aggregates of pale yellow-green platy crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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Metamunirite RRUFF ID: R060624 |
Ideal Chemistry: NaV5+O3 |
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Locality: Big Gypsum Valley, San Miguel County, Colorado, USA Source: Michael Scott S100795 Owner: RRUFF Description: Tan colored divergent radial spray of bladed crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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Metarauchite RRUFF ID: R120114 |
Ideal Chemistry: Ni2+(U6+O2)2(As5+O4)2·8H2O |
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Locality: Schweizer vein, 90 level, Eduard mine, Jachymov, Krusne Hory Mts., Czech Republic Source: Dr Peter Kolesar Owner: RRUFF Description: Aggregates of yellow play crystals, associated with green platy metazeunerite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Autunite (1) ] | ||||||||||
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Metarossite RRUFF ID: R060598 |
Ideal Chemistry: CaV5+2O6·2H2O |
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Locality: Arrowhead Claim, Slick Rock, San Miguel County, Colorado, USA Source: Michael Scott S100799 Owner: RRUFF Description: Light yellow massive Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Metarossite samples (2) ] | ||||||||||
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Metarossite RRUFF ID: R100065 |
Ideal Chemistry: CaV5+2O6·2H2O |
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Locality: Blue Cap mine, San Juan County, Utah, USA Source: Bob Jenkins Owner: RRUFF Description: Pale yellow bladed 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 Metarossite samples (2) ] | ||||||||||
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Metaschoderite RRUFF ID: R100023 |
Ideal Chemistry: AlPO4·3H2O |
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Locality: Fish Creek Range, Eureka County, Nevada, USA Source: Marcus Origlieri Owner: RRUFF Description: Microcrystalline greenish-yellow coating Status: The identification of this mineral is not yet confirmed. |
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Metastibnite RRUFF ID: R060755 |
Ideal Chemistry: Sb3+2S2-3 |
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Locality: San Jose mine, Oruro, Bolivia Source: Michael Scott S101259 Owner: RRUFF Description: Dark red semi-metallic botryoidal groups Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Stibnite (10) ] | ||||||||||
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Metatorbernite RRUFF ID: R040171 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: La Luz de Cobre, Sonora, Mexico Source: University of Arizona Mineral Museum 6497 Owner: RRUFF Description: Green thin tabular crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R070509 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Musonoi mine, Kolwezi, Katanga, Congo Source: James Shigley Owner: RRUFF Description: Dark green platy crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R070686 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Fichtelgebirge, Franconia, Bavaria, Germany Source: Michael Scott S102637 Owner: RRUFF Description: Green tabular crystals Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R070683 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Chalk Mountain mine, Spruce Pine, Spruce Pine District, Mitchell County, North Carolina, USA Source: Michael Scott S102638 Owner: RRUFF Description: Emerald-green tabular crystals associated with quartz and muscovite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R120014 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Governor's Lake pegmatite, Halifax County, Nova Scotia, Canada Source: Donald Doell Owner: RRUFF Description: Green tabular crystals associated with anatase R120013 Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R130109 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Shinkolobwe mine, Katanga, Zaire Source: Don Doell Owner: RRUFF Description: Green tetragonal platy crystals associated with phosphuranylite R130108 Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metatorbernite RRUFF ID: R140872 |
Ideal Chemistry: Cu2+(U6+O2)2(PO4)2·8H2O |
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Locality: Roland mine, Wölsendorf East District, Wölsendorf Fluorite mining District, Schwandorf, Upper Palatinate, Bavaria, Germany Source: Stefan Schorn Owner: RRUFF Description: Green platy crystals, associated with fluorite, quartz, chrysocolla, and chalcopyrite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metatorbernite samples (7) ] | ||||||||||
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Metauranocircite RRUFF ID: R050575 |
Ideal Chemistry: Ba(U6+O2)2(PO4)2·8H2O |
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Locality: Voightland, Saxony, Germany Source: University of Arizona Mineral Museum 3041 Owner: RRUFF Description: Yellow platy crystals with minor intergrown quartz Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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Metauranocircite II RRUFF ID: R070721 |
Ideal Chemistry: Ba(UO2)2(PO4)2·6H2O |
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Locality: Streuberg Quarry, Bergen, Falkenstein, Voigtland, Saxony, Germany Source: James Shigley Owner: RRUFF Description: Yellow platy crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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Metavariscite RRUFF ID: R050461 |
Ideal Chemistry: AlPO4·2H2O |
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Locality: Utahlite Hill, Lucin, Utah, USA Source: University of Arizona Mineral Museum 6532 Owner: RRUFF Description: Group of pale green acicular bladed crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Phosphosiderite (6) ] | ||||||||||
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Metavivianite RRUFF ID: R130545 |
Ideal Chemistry: Fe2+Fe3+2(PO4)2(OH)2·6H2O |
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Locality: Rapid Creek, Yukon Territory, Canada Source: Rock Currier Owner: RRUFF Description: Dull olive-green platy mass, associated with masses of brighter green acicular gormanite on brown siderite. Metavivianite is twinned around [1 -1 0]. Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Symplesite (4) ] | ||||||||||
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Metavoltine RRUFF ID: R060835 |
Ideal Chemistry: K2Na6Fe2+Fe3+6O2(S6+O4)12·18H2O |
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Locality: Cetine mine, Siena Province, Tuscany, Italy Source: Bob Jenkins Owner: RRUFF Description: Yellowish-brown granular aggregate Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Metavoltine (3) ] | ||||||||||
| Quick search: [ All Metavoltine samples (2) ] | ||||||||||
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Metavoltine RRUFF ID: R070542 |
Ideal Chemistry: K2Na6Fe2+Fe3+6O2(S6+O4)12·18H2O |
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Locality: Vulcano Island. Lipari Islands, Messina Province, Sicily, Italy Source: James Shigley Owner: RRUFF Description: Dark yellow granular crystals Status: The identification of this mineral has been made only by X-ray diffraction. |
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| Mineral Group: [ Metavoltine (3) ] | ||||||||||
| Quick search: [ All Metavoltine samples (2) ] | ||||||||||
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Metazeunerite RRUFF ID: R050524 |
Ideal Chemistry: Cu2+(U6+O2)2(As5+O4)2·8H2O |
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Locality: Majuba Hill mine, Pershing County, Nevada Source: University of Arizona Mineral Museum 9808 Owner: RRUFF Description: Green tabular crystal, cell parameters indicate a disordered structure Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Quick search: [ All Metazeunerite samples (4) ] | ||||||||||
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Metazeunerite RRUFF ID: R060301 |
Ideal Chemistry: Cu2+(U6+O2)2(As5+O4)2·8H2O |
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Locality: Joachimstal, Bohemia, Czech Republic Source: University of Arizona Mineral Museum 2484 Owner: RRUFF Description: Green blocky dipyramidal single crystals associated with yellow walpurgite, R050573 Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metazeunerite samples (4) ] | ||||||||||
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Metazeunerite RRUFF ID: R070314 |
Ideal Chemistry: Cu2+(U6+O2)2(As5+O4)2·8H2O |
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Locality: Mylar mine, Majuba Hill, Antelope District, Pershing County, Nevada, USA Source: James Shigley Owner: RRUFF Description: Green tabular crystals in quartz Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metazeunerite samples (4) ] | ||||||||||
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Metazeunerite RRUFF ID: R110205 |
Ideal Chemistry: Cu2+(U6+O2)2(As5+O4)2·8H2O |
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Locality: Roter Berg District, Schneeberg District, Erzgebirge, Saxony, Germany Source: Michael Scott S102006 Owner: RRUFF Description: Pale green platy crystals associated with cobaltlotharmeyerite R070400. Cell parameters indicate that this has a disordered structure. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Metazeunerite samples (4) ] | ||||||||||
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Meurigite-K RRUFF ID: R070105 |
Ideal Chemistry: [K(H2O)2.5][Fe3+8(PO4)6(OH)7]·4H2O |
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Locality: Teskov, Czech Republic Source: Bob Jenkins Owner: RRUFF Description: Rosettes of yellowish-orange fibrous elongated crystals on quartz, associated with tan colored spheres of kidwellite, R070106 Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Phosphofibrite (3) ] | ||||||||||
| Quick search: [ All Meurigite-K samples (2) ] | ||||||||||
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Meurigite-K RRUFF ID: R110135 |
Ideal Chemistry: [K(H2O)2.5][Fe3+8(PO4)6(OH)7]·4H2O |
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Locality: Sapucaia mine, Galileia, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Pale yellow spheres on black cryptomelane Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Phosphofibrite (3) ] | ||||||||||
| Quick search: [ All Meurigite-K samples (2) ] | ||||||||||
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Meurigite-Na RRUFF ID: R130084 |
Ideal Chemistry: [Na(H2O)2.5][Fe3+8(PO4)6(OH)7]·4H2O |
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Locality: Silver Coin mine, Valmy, Iron Point district, Humboldt County, Nevada, USA Source: Anthony R. Kampf Owner: Anthony R. Kampf Description: Radial sprays of cream-colored, flattened fibers. Data from Kampf et al (2009) Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Phosphofibrite (3) ] | ||||||||||
)
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Meyerhofferite RRUFF ID: R050671 |
Ideal Chemistry: CaB3O3(OH)5·H2O |
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Locality: Inyo County, California, USA Source: University of Arizona Mineral Museum 6263 Owner: RRUFF Description: Colorless prismatic single crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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)
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Miargyrite RRUFF ID: R050440 |
Ideal Chemistry: Ag1+Sb3+S2-2 |
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Locality: Saint Andreasberg, Harz Mountains, Niedersachsen, Germany Source: University of Arizona Mineral Museum 1494 Owner: RRUFF Description: Black prismatic 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 Miargyrite samples (2) ] | ||||||||||
)
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Miargyrite RRUFF ID: R050480 |
Ideal Chemistry: Ag1+Sb3+S2-2 |
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Locality: Boulder County, Colorado, USA Source: California Institute of Technology 20717 Owner: RRUFF Description: Dark gray metallic fragment, hints of internal red Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Miargyrite samples (2) ] | ||||||||||
)
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Miassite RRUFF ID: R070075 |
Ideal Chemistry: Rh17S15 |
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Locality: Yukhtochka placer, Tributary of Aldan River, Yakutia, Russia Source: Michael Scott S105079 Owner: RRUFF Description: A mechanical mixture of dark gray metallic polished grains and pale yellow vanadinite embedded in epoxy Status: The identification of this mineral has been confirmed only by chemical analysis |
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)
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Microcline RRUFF ID: R040154 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Mitchell County, North Carolina, USA Source: University of Arizona Mineral Museum 81 Owner: RRUFF Description: White cleavage fragment with some perthitic character Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microcline RRUFF ID: R050054 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Kenticha, Negele area, Sidamo Province, Ethiopia Source: Rock Currier Owner: RRUFF Description: Light blue single crystal Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microcline RRUFF ID: R050150 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Crystal Peak area, Park/Teller Counties, Colorado, USA Source: Dave Bunk Minerals Owner: RRUFF Description: Pale blue prismatic crystals Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microcline RRUFF ID: R050193 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Devil's Head, Douglas County, Colorado, USA Source: Dave Bunk Minerals Owner: RRUFF Description: White to colorless heterogeneous mixture of K and Na feldspar in a cluster of crystals. Crystal structure determined, presented below. This sample is known as an intermediate microcline in the literature. Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
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Microcline RRUFF ID: X050117 |
Ideal Chemistry: KAlSi3O8 |
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Locality: White Queen mine, Pala, San Diego County, California, USA Source: G.R. Rossman 1281 Owner: Caltech Description: Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microcline RRUFF ID: R120005 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Mount Malosa, Zomba District, Malawi Source: Marcus Origlieri Owner: RRUFF Description: Tan colored euhedral crystals associated with black arfvedsonite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microcline RRUFF ID: R150015 |
Ideal Chemistry: KAlSi3O8 |
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Locality: Unknown Source: Jennifer Schmidt LDP12-12 Owner: RRUFF Description: Pale tan, fragment Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ feldspar (62) ] | ||||||||||
| Quick search: [ All Microcline samples (7) ] | ||||||||||
)
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Microlite RRUFF ID: R070058 |
Ideal Chemistry: (Ca,Na)2Ta2(O,OH,F)7 |
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Locality: Kyoktogai pegmatite field, Altai, Xinjinag Province, China Source: Michael Scott S105081 Owner: RRUFF Description: Bluish-green fragments embedded in epoxy, co-type material. Originally labeled as 'natrobistantite', a discredited species. Status: The identification of this mineral is not yet confirmed. |
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| Mineral Groups: [ pyrochlore (28) ] [ microlite (15) ] | ||||||||||
)
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Microsommite RRUFF ID: R100090 |
Ideal Chemistry: [(Na,K)6(S6+O4)][Ca2Cl2][(Si6Al6O24)] |
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Locality: Monte Somma, Campania, Italy Source: Marcus Origlieri Owner: RRUFF Description: Aggregate of parallel striated colorless crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Groups: [ cancrinite-sodalite (37) ] [ cancrinite (11) ] | ||||||||||
)
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Miersite RRUFF ID: R110034 |
Ideal Chemistry: Ag1+I1- |
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Locality: Block 2-1, 100 meter level, Rubtsovsk mine, Rudniy Altai Mountains, Russia Source: William W Pinch Owner: RRUFF Description: Greenish-yellow massive Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Miersite samples (2) ] | ||||||||||
)
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Miersite RRUFF ID: R110170 |
Ideal Chemistry: Ag1+I1- |
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Locality: Proprietary mine, Broken Hill, Australia Source: Marcus Origlieri Owner: RRUFF Description: Pale yellow tetrahedra, associated with hexagonal plates of iodargyrite Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Sphalerite (35) ] | ||||||||||
| Quick search: [ All Miersite samples (2) ] | ||||||||||
)
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Miguelromeroite RRUFF ID: R070064 |
Ideal Chemistry: Mn2+5(As5+O3OH)2(As5+O4)2(H2O)4 |
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Locality: Veta Negra mine, Pampa Larga Mining District, Tierra Amarilla, Chile Source: Bob Jenkins Owner: RRUFF Description: Sprays of pink thin prismatic crystals associated with siderite and cuproadamite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Hureaulite (4) ] | ||||||||||
)
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Mikenewite RRUFF ID: R210021 |
Ideal Chemistry: Mn2+(S4+O3)·3H2O |
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Locality: Ojuela mine, Mapimí, Municipio de Mapimí, Durango, Mexico Source: Bob Jenkins Owner: RRUFF Description: Yellowish spheres, associated with adamite and lotharmeyerite, 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: [ Albertiniite (1) ] | ||||||||||
)
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Milarite RRUFF ID: R070373 |
Ideal Chemistry: KCa2(Be2AlSi12O30)·H2O |
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Locality: Guanajuato, Mexico Source: Royal Ontario Museum M28150 Owner: RRUFF Description: Pale yellow-green hexagonal fragment associated with calcite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Milarite (18) ] | ||||||||||
| Quick search: [ All Milarite samples (3) ] | ||||||||||
)
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Milarite RRUFF ID: R070464 |
Ideal Chemistry: KCa2(Be2AlSi12O30)·H2O |
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Locality: Rössing Mine, Arandis, Swakopmund District, Namibia Source: Michael Scott S105271 Owner: RRUFF Description: Fragments from a pale yellow green hexagonal prism Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Milarite (18) ] | ||||||||||
| Quick search: [ All Milarite samples (3) ] | ||||||||||
)
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Milarite RRUFF ID: R120135 |
Ideal Chemistry: KCa2(Be2AlSi12O30)·H2O |
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Locality: Jaguaraçu, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Pale yellow hexagonal prisms, associated with minasgeraisite-(Y) R120134 Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Milarite (18) ] | ||||||||||
| Quick search: [ All Milarite samples (3) ] | ||||||||||
)
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Millerite RRUFF ID: R060898 |
Ideal Chemistry: NiS |
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Locality: Orford, Quebec, Canada Source: Royal Ontario Museum M3900 Owner: RRUFF Description: Pale brass-yellow prismatic crystal with pronounced striations, associated with calcite and green grossular Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Millerite (3) ] | ||||||||||
| Quick search: [ All Millerite samples (3) ] | ||||||||||
)
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Millerite RRUFF ID: R070323 |
Ideal Chemistry: NiS |
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Locality: Keokuk area, Lee County, Iowa, USA Source: James Shigley Owner: RRUFF Description: Bronze colored metallic fibers associated with chalcopyrite and quartz Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Millerite (3) ] | ||||||||||
| Quick search: [ All Millerite samples (3) ] | ||||||||||
)
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Millerite RRUFF ID: R080122 |
Ideal Chemistry: NiS |
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Locality: Eugenia mine, Bellmunt del Priorat, Tarragona, Catalonia, Spain Source: Joan Abella i Creus Owner: RRUFF Description: Metallic-bronze striated crystals Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Millerite (3) ] | ||||||||||
| Quick search: [ All Millerite samples (3) ] | ||||||||||
)
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Mimetite RRUFF ID: R040123 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: San Pedro Corralitos, Chihuahua, Mexico Source: University of Arizona Mineral Museum 13770 Owner: RRUFF Description: Yellow botryoidal group Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite RRUFF ID: R050007 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: Pingtouling, Guangdong, China Source: Eugene Schlepp Owner: RRUFF Description: Reddish orange colored hexagonal prisms Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite RRUFF ID: R050527 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia Source: University of Arizona Mineral Museum 10567 Owner: RRUFF Description: Yellow hexagonal prisms, monoclinic polytype Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite RRUFF ID: R130731 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia Source: Bob Downs Owner: RRUFF Description: Pale yellow transparent hexagonal prisms, monoclinic polytype Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite RRUFF ID: R060920 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia Source: Marcus Origlieri Owner: RRUFF Description: Yellow to brownish hexagonal prism, monoclinic polytype Status: The identification of this mineral has been made only by X-ray diffraction. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite RRUFF ID: R070309 |
Ideal Chemistry: Pb2+5(As5+O4)3Cl |
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Locality: Vrancice, Czechoslovakia Source: Michael Scott S102788 Owner: RRUFF Description: Creamy white massive associated with white calcite. Crystal structure analysis demonstrated full occupancy by Pb with no ordering of Ca. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite samples (6) ] | ||||||||||
)
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Mimetite-M RRUFF ID: R070146 |
Ideal Chemistry: Pb5(AsO4)3Cl |
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Locality: Treue Freundschaft Mine, Johanngeorgenstadt, Erzgebirge, Saxony, Germany Source: Michael Scott S101900 Owner: RRUFF Description: Yellowish green crystals coated with white feathery hydroxylapatite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite-M samples (2) ] | ||||||||||
)
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Mimetite-M RRUFF ID: R070138 |
Ideal Chemistry: Pb5(AsO4)3Cl |
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Locality: Eureka Hill Mine, Tintic District, East Tintic Mts, Juab County, Utah, USA Source: Michael Scott S103866 Owner: RRUFF Description: Colorless thin hexagonal prisms associated with quartz and anglesite Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Apatite (56) ] | ||||||||||
| Quick search: [ All Mimetite-M samples (2) ] | ||||||||||
)
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Minasgeraisite-(Y) RRUFF ID: R120134 |
Ideal Chemistry: CaBe2Y2(SiO4)2O2 |
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Locality: Jaguaraçu, Minas Gerais, Brazil Source: Luiz Menezes Owner: RRUFF Description: Purple crystals on muscovite, associated with milarite R120135 Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Gadolinite (18) ] | ||||||||||
)
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Minasragrite RRUFF ID: R130365 |
Ideal Chemistry: V4+O(S6+O4)·5H2O |
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Locality: Minas Ragra mine, Pasco, Peru Source: Tom Loomis Owner: RRUFF Description: Glassy blue crystals on patronite, associated with R130366 retgersite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
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| Mineral Group: [ Minasragrite (2) ] | ||||||||||
)
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Minium RRUFF ID: R050426 |
Ideal Chemistry: Pb2+2Pb4+O4 |
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Locality: El Chichi mine, Culiacan, Sinalog, Mexico Source: University of Arizona Mineral Museum 15293 Owner: RRUFF Description: Orange earthy coating Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Minium (6) ] | ||||||||||
| Quick search: [ All Minium samples (3) ] | ||||||||||
)
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Minium RRUFF ID: R070508 |
Ideal Chemistry: Pb2+2Pb4+O4 |
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Locality: Gila Bend, Maricopa County, Arizona, USA Source: James Shigley Owner: RRUFF Description: Bright orange earthy coating Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Minium (6) ] | ||||||||||
| Quick search: [ All Minium samples (3) ] | ||||||||||
)
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Minium RRUFF ID: P001241 |
Ideal Chemistry: Pb2+2Pb4+O4 |
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Locality: Virtual Source: ScottLab P001241 Owner: Mike Scott Description: PURPLE OpenSource 20190319 Status: The identification of this mineral has been determined only by Raman spectroscopy |
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| Mineral Group: [ Minium (6) ] | ||||||||||
| Quick search: [ All Minium samples (3) ] | ||||||||||
)
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Minyulite RRUFF ID: R070151 |
Ideal Chemistry: KAl2(PO4)2F·4H2O |
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Locality: Minyulo Well, Dandaragan, Western Australia, Australia Source: James Shigley Owner: RRUFF Description: Radiating colorless transparent thin prismatic 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 Minyulite samples (2) ] | ||||||||||
)
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Minyulite RRUFF ID: R100072 |
Ideal Chemistry: KAl2(PO4)2F·4H2O |
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Locality: Tom's quarry, Kapunda, South Australia, Australia Source: Marcus Origlieri Owner: RRUFF Description: Parallel aggregates of tabular colorless crystals associated with sprays of white, thin platy aldermanite, R100073, and colorless needle wavellite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Quick search: [ All Minyulite samples (2) ] | ||||||||||
)
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Miserite RRUFF ID: R060095 |
Ideal Chemistry: K1.5-x(Ca,Y,REE)5[Si6O15][Si2O7](OH,F)2·yH2O |
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Locality: Magnet Cove, Garland County, Arkansas, USA Source: University of Arizona Mineral Museum 10141 Owner: RRUFF Description: Massive pink fine fibers associated with eudialyte, wollastonite, and orthoclase Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Quick search: [ All Miserite samples (2) ] | ||||||||||
)
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Miserite RRUFF ID: R060393 |
Ideal Chemistry: K1.5-x(Ca,Y,REE)5[Si6O15][Si2O7](OH,F)2·yH2O |
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Locality: Wilson Springs, Garland County, Arkansas, USA Source: Michael Scott S100086 Owner: RRUFF Description: Pale purple mass of prismatic to flaky fragments Status: The identification of this mineral has been confirmed by X-ray diffraction. |
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| Quick search: [ All Miserite samples (2) ] | ||||||||||
)
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Mitridatite RRUFF ID: R060367 |
Ideal Chemistry: Ca2Fe3+3O2(PO4)3·3H2O |
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Locality: Palermo #1 mine, North Groton, Grafton County, New Hampshire, USA Source: Michael Scott S100211 Owner: RRUFF Description: Olive-green crust Status: The identification of this mineral is not yet confirmed. |
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| Mineral Group: [ Arseniosiderite (5) ] | ||||||||||
)
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Mixite RRUFF ID: R070503 |
Ideal Chemistry: Cu2+6Bi3+(As5+O4)3(OH)6·3H2O |
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Locality: Hilarion mine, near Kamariza, Lavrion District, Greece Source: Bob Jenkins Owner: RRUFF Description: Radiating aggregates of bluish-green acicular crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
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| Mineral Group: [ Mixite (10) ] | ||||||||||
)
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Moissanite RRUFF ID: R061083 |
Ideal Chemistry: SiC |
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Locality: Synthetic Source: Los Alamos National Labs Owner: RRUFF Description: Colorless fragments from a broken high pressure anvil cell Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Wurtzite (20) ] | ||||||||||
| Quick search: [ All Moissanite samples (3) ] | ||||||||||
)
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Moissanite RRUFF ID: R110106 |
Ideal Chemistry: SiC |
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Locality: Synthetic Source: Gemological Institute of America 10-12-2010-11 Owner: RRUFF Description: A cut, colorless (0.45ct) gemstone, sublimation grown. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Wurtzite (20) ] | ||||||||||
| Quick search: [ All Moissanite samples (3) ] | ||||||||||
)
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Moissanite RRUFF ID: R150016 |
Ideal Chemistry: SiC |
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Locality: China Source: Rob Lavinsky Owner: RRUFF Description: Semi-metallic hexagonal plates Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
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| Mineral Group: [ Wurtzite (20) ] | ||||||||||
| Quick search: [ All Moissanite samples (3) ] | ||||||||||
)
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Molybdenite RRUFF ID: R050209 |
Ideal Chemistry: Mo4+S2-2 |
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Locality: Boss Mountain mine, Hendrix Lake, British Columbia, Canada Source: Lloyd Twaites Owner: RRUFF Description: Foiliated gray colored, represents the 2H polytype Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis |
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| Mineral Group: [ Molybdenite (3) ] | ||||||||||
| Quick search: [ All Molybdenite samples (2) ] | ||||||||||
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