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Pyrolusite & Manganite

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Pyrolusite & Manganite

Classic Locality

Description Tabs

Description
Locality: 
Gremmelsbach, Triberg im Schwarzwald, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3.3 × 1.8 cm
Description

Beautiful radial groups of extremely lustrous Pyrolusite-Manganite crystals (analysis shows the presence of both species - Pyrolusite partially replacing Manganite) from new find on this classic German locality.

Mineral Data
What's on the rock

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5

Manganite

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

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