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0 item @ $0.00  

Manganite

#DH39171

Manganite

#DH39171
Availability
Sold
Size
4.5 x 3.5 x 2 cm - Miniature 
Formula
Mn3+O(OH) (RRUFF)
Locality
Robert mine, Cuyuna Range, Crow Wing Co., Minnesota, United States

Highly lustrous black well-developed cyrstals of Manganite to 2mm from this historic mining district in upper Minnesota.

Manganite

Formula
Mn3+O(OH) 
Crystal System
Monoclinic 
Crystal Habit
Pseudo Orthorhombic, Massive - Fibrous, Prismatic 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
black, gray, grayish black 
Streak
dark brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness

Data courtesy of Webmineral.

Collection
Hess Collection
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