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Pyrite Millerite & Dolomite

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FNW46387

Pyrite Millerite & Dolomite

Description Tabs

Description
Locality: 
Corydon, Harrison County, Indiana, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.8 × 1.5 cm
Description

A matrix of nice pale pink dolomite crystals with some millerite crystals like needles. Is notable two pyrite crystals perched at the top of the millerite needles. Mounted on a protected box.

Mineral Data
What's on the rock

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
Fine Minerals World