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Pyrolusite

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ESM1084030

Description Tabs

Description
Locality: 
Bollnbach Mine, Herdorf, Altenkirchen, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 2 cm
Description

Lustrous black pyrolusite crystals

Mineral Data
What's on the rock

Pyrolusite

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