Yakhontovite

General Information:
 Chemical Formula:
(Ca,Na,K)0,3(CuFe++Mg)2Si4O10(OH)2·3(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
pistachio green.
 Diaphaniety:
Transparent
 Hardness:
2-3 - Gypsum-Calcite
 Streak:
light green
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