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Mineralpedia Details for Penroseite

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Penroseite

Penroseite

Formula
NiSe2 
Crystal System
Isometric 
Crystal Habit
Reniform, Radial, Columnar 
Cleavage
Perfect, Distinct, None 
Luster
Metallic 
Color
lead gray, steel gray 
Streak
black 
Class
Isometric - Diploidal 
Fracture
Brittle 
Hardness
2.5-3 
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Localities of Penroseite

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