GERASIMOVSKITE

General Information:

Chemical Formula:

(Mn,Ca)(Nb,Ti)5O12·9(H2O) (?)

Physical Properties:

Color:

brown, gray, or light gray.

Density:

2.52 - 2.58, Average = 2.54

Diaphaniety:

Translucent to Opaque

Hardness:

2 - Gypsum

Luster:

Pearly

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