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0 item @ $0.00  

Pyrolusite

#55605

Pyrolusite

#55605
Availability
Sold
Size
3.5 x 2.5 x 2.5 cm - Miniature 
Formula
MnO2 (RRUFF)
Locality
Alberta, Baraga Co., Michigan, United States

Silvery acicular crystals in divergent groups to 1.4cm. Excellent specimen for this mineral.

Pyrolusite

Formula
MnO2 
Crystal System
Tetragonal 
Crystal Habit
Reniform, Dendritic, Earthy 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
steel gray, iron gray, bluish gray 
Streak
black 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
6-6.5 

Data courtesy of Webmineral.

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