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Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2), Calcite : CaCO3, Quartz : SiO2 | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico Hemispherical mass of 3-6 mm quartz and calcite crystals with parallel pyrrhotite crystals up to 6 cm long on one side. Good large specimen with no apparent damage. Has old label from Min. Rec. Auction (Gardner Miller donor). Ex. Earle Sullivan collection (Ct.). Overall size of mineral specimen: 13x9x5 cm. Size of individual crystals: 3-60 mm. |
| © 2002 John H. Betts | Photo ID: 4386 View Count: 519 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2) | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico Cluster of sharp, lustrous pyrrhotite crystals up to 21 mm with minor white calcite coating one side of the largest crystal. All crystals complete, with sharp, lustrous faces. No damage. Overall size of mineral specimen: 4x2.5x2 cm. Size of individual crystals: 3-21 mm. |
| © 2002 John H. Betts | Photo ID: 7091 View Count: 431 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2) | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico Pyrrhotite crystals to 20 mm across perched on massive pyrrhotite and with some calcite rosettes. This specimen has been repaired. Photo and collection Antonio Borrelli |
| © Antonio Borrelli | Photo ID: 35782 View Count: 428 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2), Galena : PbS | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico I cannot recall ever seeing crystals of these two minerals growing together in this way, not just from Mexico, but from anywhere! I have looked long and hard through a loupe at this specimen. It almost looks as though one of the minerals has pseudomorphed crystals of the other, but apparently that is not the case. What has happened is that the ... |
| © Rob Lavinsky | Photo ID: 65525 View Count: 268 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2) | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico Crystal with 5x4,5x3cm - December of 1993 |
| © Martins da Pedra | Photo ID: 40854 View Count: 266 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2) | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico a 6mm group of crystals. Photographed by Karl Volkman. In the Collection of Donald Volkman. |
| © Don Volkman 01/06 | Photo ID: 46293 View Count: 217 |
Pyrrhotite : Fe7S8, (-4M), also given as Fe1-xS (x = 0 - 0.2) | |
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Potosí Mine (El Potosí Mine), Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico Specimen 47x43mm,crystals 5 to 8 mm.Photograph and collection jm.CLAUDE |
| © jm.CLAUDE | Photo ID: 152500 View Count: 74 |
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