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Millerite

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JYJ845319

Millerite

Description Tabs

Description
Locality: 
St Louis & Spergen Limestones, St Louis County, Missouri, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.4 × 1.8 cm
Description

Bronze metallic millerite in cavities of calcite and chalcopyrit from St. Louis Co., Missouri, USA.

 

 

Mineral Data
What's on the rock

Millerite

Formula: 
NiS
Strunz: 
2.CC.20
Crystal System: 
Trigonal
Hardness: 
3.0 - 3.5
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic