Mineral Specimen Images (A)

Mineral Specimen Images (A)
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Mineral Specimen Images (A) With 310 Images

Aheylite Image

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Aheylite: (Fe++,Zn)Al6(PO4)4(OH)8·4(H2O)

Comments: Colorless radiating spray of aheylite crystals.
Location: Huanuni, Bolivia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Ahlfeldite Image

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Ahlfeldite: (Ni,Co)SeO3·2(H2O)

Comments: Green encrustations of ahlfeldite on matrix.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aikinite Image

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Aikinite: PbCuBiS3

Comments: Gray metallic prismatic crystals of aikinite and crystalline quartz.
Location: Mike Mine, San Juan County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aikinite Image

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Aikinite: PbCuBiS3  
Berryite: Cu3Ag2Pb3Bi7S16

Comments: Fine-grained, gray, metallic granular berryite with silvery, metallic, prismatic aikinite.
Location: Mike Mine, San Juan County, Colorado. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ajoite Image

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Ajoite: (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)

Comments: Bluish, bladed ajoite crystals.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ajoite Image

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Ajoite: (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)  
Shattuckite: Cu5(SiO3)4(OH)2

Comments: Dark blue, tabular crystals of shattuckite on light blue ajoite.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ajoite Image

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Ajoite: (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)

Comments: Aqua blue, long bladed crystals or ajoite on matrix.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Akaganeite Image

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Akaganeite: Fe+++(O,OH,Cl)

Comments: Rusty brown coating of akaganeite on rock.
Location: Wells, Elko County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akatoreite Image

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Akatoreite: (Mn++,Fe++)9Al2Si8O24(OH)8  
Rhodonite: (Mn++,Fe++,Mg,Ca)SiO3

Comments: Brown akatoreite in pink rhodonite.
Location: Akatore Creek, Eastern Otago Peninsula, South Island, New Zealand. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akdalaite Image

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Akdalaite: 5(Al2O3)·(H2O)

Comments: Crystalline white akdalaite.
Location: Bulla Island, Caspian Sea, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akermanite Image

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Akermanite: Ca2MgSi2O7

Comments: White translucent crystals akermanite.
Location: Lago de Vico, Viterbo, Lazio, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akhtenskite Image

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Akhtenskite: Mn++++O2

Comments: Dark gray grains of akhtenskite with brown superficial coating.
Location: Akhtenskoye Deposit, Chelyabinsk District, Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akimotoite Image

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Akimotoite: (Mg,Fe)SiO3

Comments: Electron micrograph of akimotoite (Ak) as columnar grains. Aggregates of akimotoite are adjacent to a large clinoenstatite grain (Cen) with (100) twin lamallae. (AmMin 84:268).
Location: Shock-metamorphosed Tenham chondrite. Scale: See Image.
© American Mineralogist

Akrochordite Image

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Akrochordite: Mn4Mg(AsO4)2(OH)4·4(H2O)  
Eveite: Mn2(AsO4)(OH)

Comments: Micro crystals (to about 0.75mm) of very pale grayish green eveite in tiny vug with light pink akrochordite. Co-Type specimen & type locality.
Location: Langban, Varmland, Sweden. Scale: 13x10x4 mm.
© Tom Loomis / Dakota Matrix

Aksaite Image

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Aksaite: MgB6O7(OH)6·2(H2O)

Comments: Gray-white massive aksaite fragment photographed through a capsule.
Location: Chelkar Salt dome, Ak-Say Valley, Kazakhstan. Scale: Not Given.
© Diederik Visser

Aktashite Image

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Aktashite: Cu6Hg3As4S12

Comments: Metallic gray grain of aktashite in quartz gangue.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alabandite Image

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Alabandite: MnS

Comments: Dark gray stalactitic alabandite.
Location: Broken Hill Proprietary Mine, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alabandite Image

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Alabandite: MnS  
Daubreelite: Fe++Cr2S4

Comments: Daubreelite (D), bright metallic white, with alabandite (A) (dull yellow) as inclusions in a polished section of an achondrite meteorite.
Location: Norton County, Kansas. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alacranite Image

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Alacranite: As8S9

Comments: Red crystals of alacranite.
Location: Mine Wilmsdorfer Schacht, Possendorf near Dresden, Sachsen, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Alamosite Image

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Alamosite: PbSiO3

Comments: White alamosite crystal group. John Schneider Collection.
Location: Tsumeb, Namibia. Scale: 3.5x3x2 cm.
© Dan Weinrich
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