Welinite-III

General Information:
 Chemical Formula:
Mn++6(W++++++,Mg)2Si2(O,OH)14
 IMA Status:
Approved IMA 1967
Physical Properties:
 Color:
brown or reddish black.
 Density:
4.47
 Diaphaniety:
Transparent to Translucent
 Hardness:
4 - Fluorite
 Luster:
Resinous
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