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Manganite

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MEX167016

Manganite

Classic Locality

Description Tabs

Description
Locality: 
Postmasburg, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.7 × 5.9 × 4.9 cm
Weight: 
456.00gr
Description

A cabinet specimen with small, perfect manganite crystals. The specimen was offer as an alabandite. An analysis showed, it is manganite with a coating of secondary manganese ore. We call in german "hartmanganerz". It is a mixture of manganese ore.

Mineral Data
What's on the rock

Manganite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.15
Hardness: 
4.0
Type Locality: 
Manganese deposit, Ilfeld, Nordhausen, Harz, Thuringia, Germany