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Cronstedtite & Siderite

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SCH48105

Cronstedtite & Siderite

Description Tabs

Description
Locality: 
La Union, Murcia, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.2 × 1.4 cm
Description

A matrix of massive pyrrhotite is host to several nice bright black cronstedtite crystals and a group of siderite crystal aggregates.

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White
schani

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