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Acanthite : Ag2S | |
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Porco, Agua de Castilla, Antonio Quijarro Province, Potosí Department, Bolivia 2.5 x 1.2 x 0.6 cm. These specimens came out of Porco about 3 years ago, and they were very limited in quantity. The parcel that I purchased only contained a handful of specimens, all of them thumbnails. They were, however, the first contemporary Acanthites that I had seen from Porco in my life. This piece will not set any records for the ... |
| © Rob Lavinsky | Photo ID: 146685 View Count: 347 |
Acanthite : Ag2S, Acanthite : Ag2S | |
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Colquechaca (Aullagas), Chayanta Province, Potosí Department, Bolivia Silver and Acanthite. Specimen is from the collection of Harvard University #95328 (1972). Scale at bottom of image is an inch with a rule at one cm. |
| Photo ID: 242545 View Count: 70 | |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O | |
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El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia Ahlfeldite crystal group. Field of view, 1mm x 1mm. Brent Thorne specimen and photograph. |
| © Brent Thorne | Photo ID: 16495 View Count: 1075 |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O | |
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El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia Up to now regarded as Cobaltomenite. Alfredo Petrov analyzed many of similar items and they were all Ahlfeldites. Very small amounts of Co let Ahlfeldite get pink. Picture width 4 mm. Collection and photograph Stephan Wolfsried Mindat.org Photo of the Day - 15th Jan 2007 |
| © Stephan Wolfsried | Photo ID: 40889 View Count: 702 |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O, Chalcomenite : Cu[SeO3] · 2H2O | |
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El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia Pink cobaltoan ahlfeldite crystals & blue Chalcomenite crystals in Krutaite. Field of view 5 mm. Collection M. Kampf No 90-186. |
| © 2005 M. Kampf | Photo ID: 44229 View Count: 526 |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O, Chalcomenite : Cu[SeO3] · 2H2O | |
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El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia Picture width is 5mm. Pink crude Ahlfieldite with minor blue Chalcomenite. Depth of field is achieved with CombineZM. |
| © Elmar Lackner | Photo ID: 107018 View Count: 217 |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O | |
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Virgen de Surumi mine (Pacajake mine; Pakajake mine), Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potosí Department, Bolivia Group of ahlfeldite crystals with more cobalt in the structure. Associated minerals include, molbdomenite, anglesite, chalcomenite and penroseite. Field of view, 1mm x 1mm. This specimen has been analyzed by micropobe and XRD. Brent Thorne specimen and photograph. |
| © Brent Thorne 2009 | Photo ID: 222927 View Count: 44 |
Ahlfeldite : (Ni,Co)[SeO3] · 2H2O, Anglesite : PbSO4 | |
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Virgen de Surumi mine (Pacajake mine; Pakajake mine), Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potosí Department, Bolivia Ahlfeldite crystals on anglesite associated with molybdomenite and chalcomenite in a penroseite matrix. Field of view, 1mm x 1mm. This specimen has been analyzed by microprobe and XRD. Brent Thorne specimen and photograph. |
| © Brent Thorne 2009 | Photo ID: 222924 View Count: 41 |
Alum-(K) : KAl[SO4]2 · 12H2O | |
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El Desierto mine, San Pablo de Napa, Daniel Campos Province, Potosí Department, Bolivia A 3 mm crystal of Potassium alum with Sulphur from the El Desierto mine fumaroles, Potosi, Bolivia. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 54446 View Count: 424 |
Andorite : PbAgSb3S6 | |
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Cerro de Potosí (Cerro Rico), Potosí City, Potosí Department, Bolivia 30 x 20 mm specimen. Aggregate of radiating, leaf-like blades of andorite. RFC T1691. |
| © Michael C. Roarke | Photo ID: 99133 View Count: 160 |
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