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Cronstedtite

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CR25082

Cronstedtite

Rare Mineral

Description Tabs

Description
Locality: 
Herja Mine, Chiuzbaia, Baia Mare, Maramureș County, Romania
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.8 × 2.8 cm
Description

Black lustous cronstedtite crystals on sulfidic matrix.

Ex Dr. Hartel collection, Germany

Mineral Data
What's on the rock

Cronstedtite

Formula: 
Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Strunz: 
9.ED.15
Crystal System: 
Monoclinic, Trigonal, Hexagonal
Hardness: 
3.5
Type Locality: 
Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic