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Mineralpedia Details for Goldmanite

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Goldmanite

Goldmanite

Formula
Ca3V3+2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Crystalline - Fine 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
dark green, brownish green 
Streak
white 
Class
Isometric - Hexoctahedral 
Hardness
6-7 
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Goldmanite from Gambatesa mine, Reppia, Graveglia Valley, Genova prov., Liguria, Italy

Goldmanite
            from Gambatesa mine, Reppia, Graveglia Valley, Genova prov., Liguria, Italy

These are tiny green crystal specks throughout the matrix. Goldmanite is the vanadium garnet, which is found in very few places worldwide (only one in Italy and three in the US along with only a handful of others).

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