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Cronstedtite

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BCK741917

Cronstedtite

Rare Mineral

Description Tabs

Description
Locality: 
Wheal Jane, Kea, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4.8 × 2.6 cm
Description

You are bidding on a small miniature sample with several vugs of black prismatic crystals of cronstedtite in vugs of pyrite crystals from a hard to find locality for the species. 

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

Seller Information

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