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Hausmannite Psm Manganite

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CR600426

Hausmannite Psm Manganite

Classic Locality

Description Tabs

Description
Locality: 
Ilfeld, Nordhausen, Harz, Thuringia, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.3 × 3 cm
Description

I very good old time specimen of a replacement of manganite by hausmannite.

Most of these crystals are unterminated but the specimen shows very distinct, well-formed crystals to 1.7 cm.

Mineral Data
What's on the rock

Hausmannite

Formula: 
Mn2+Mn3+2O4
Strunz: 
4.BB.10
Hardness: 
5.5
Type Locality: 
Oehrenstock (Öhrenstock), Langewiesen, Ilmenau District, Thuringian Forest, Thuringia, Germany

Manganite

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