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Cronstedtite

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NST665900

Cronstedtite

With Antique Label

Description Tabs

Description
Locality: 
(Bohemia), Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 11 × 6.5 cm
Weight: 
955.00gr
Description

Interesting old-timer showing black, radial aggregates of Cronstedtite on quartzite matrix.

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
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