MANGANOSTIBITE

General Information:

Chemical Formula:

(Mn++,Fe++)7(SbO4)(AsO4,SiO4)O4

Physical Properties:

Cleavage:

[???] Indistinct

Color:

black.

Density:

4.949

Diaphaniety:

Opaque

Luster:

Greasy (Oily)

Streak:

brown

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