| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from South Dakota > Jarosite (3 pieces) |
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| DESCRIPTION: | No. 74710 |
| Mineral: | Jarosite (3 pieces) |
| Locality: | Richmond-Sitting Bull Mine, Galena District, Lawrence County, South Dakota |
| Description: | Lustrous transparent brown jarosite crystals to 0.1 mm on an unidentified black mineral. The jarosite crystals are pseudo-octahedral form. Jarosite specimens are in demand ever since they discovered jarosite on Mars. See Matrix magazine, v.10#2 Ex. Willard Bill L. Roberts (1923-1987), author Mineralogy of the Black Hills |
| Overall Size: | 5-14 mm |
| Crystals: | 0.1 mm |
| Archived: | For reference only |
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