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Betpakdalite-Caca

#59790

Betpakdalite-Caca

#59790
Availability
Sold
Size
2.5 x 1.8 x 1.6 cm - Thumbnail 
Formula
MgCa2Fe3+3Mo8(AsO4)2O28(OH)·23H2O (RRUFF)
Locality
Sadisdorf, Erzgebirge, Saxony, Germany
Tagged
arsenate

Yellow pulverulent coating of rare Betpakdalite with Molybdenite. There are purple flaky crystals, as shown in the last photo, which are unidentified. In-hand, under the scope, these are very hard to see. But the digital camera picks them up and, it becomes obvious to see. My only guess is that these are chromian clinochlore, but there are no reported chromium minerals at this locality.

Betpakdalite-CaCa

Formula
MgCa2Fe3+3Mo8(AsO4)2O28(OH)·23H2

Data courtesy of Webmineral.

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