Galkhaite
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Galkhaite
Galkhaite is a rare and chemically complex sulfosalt mineral from a group of natural thioarsenites. Its formula is (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12, making the mineral the only known natural Cs-Hg and Cs-As phase. It occurs in Carlin-type hydrothermal deposits.

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Galkhaite

General Information:
 Chemical Formula:
(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12
 IMA Status:
Approved IMA 1972
Physical Properties:
 Color:
orange red, reddish, or black.
 Density:
5.4
 Diaphaniety:
Opaque
 Hardness:
3 - Calcite
 Luster:
Vitreous - Adamantine
 Streak:
orange
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