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 Jouravskite : Ca6Mn3+2[(OH)4|(SO4,CO3)]3 · 26H2O |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
6.9 x 5.4 x 1.6 cm. This vivid, sparkly yellow specimen features an incredibly rich coating of the very rare species jouravskite, in a carpet of microcrystals completely covering the (calcite?) matrix. This is a rare hydrated, calcium, manganese sulfate, carbonate that comes out only rarely from the Kalahari Fields. It is the biggest and richest ... |
| © Rob Lavinsky | Photo ID: 169936 View Count: 140 |
Jouravskite : Ca6Mn3+2[(OH)4|(SO4,CO3)]3 · 26H2O |
|
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
Jouravskite. Vasco Trancoso collection and photo. Size: small cabinet, 6.9 x 5.4 x 1.6 cm. Sparkly yellow specimen features an incredibly rich coating of the very rare species jouravskite, in a carpet of microcrystals completely covering the matrix. This is a rare hydrated, calcium,manganese,sulfate, carbonate that comes out only rarely from the ... |
| © vasco trancoso | Photo ID: 186777 View Count: 93 |
Jouravskite : Ca6Mn3+2[(OH)4|(SO4,CO3)]3 · 26H2O |
|
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
6.9 x 2.4 x 1.6 cm. Jouravskite is a very rare hydrated sulfate found at only three localities worldwide. Two are in the Kalahari Manganese Field. A "board" of massive manganite is strikingly covered on both sides with a vivid, lemon-yellow crust of fibrous jouravskite. Very highly representative and very rich for the rare species and from the ... |
| © Rob Lavinsky | Photo ID: 217390 View Count: 47 |
