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Chalcophanite & Calcite

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LAV149628

Chalcophanite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Villia Mines, Plaka, Lavrion District, Attiki Prefecture, Greece
Size Range: 
Cabinet (10-18 cm)
Size: 
9.2 × 11.1 × 6.5 cm
Description

Small crystals of grey-bluish metallic chalcophanite crystals into limonite cavities with calcite. A free standing cabinet specimen.

Mineral Data
What's on the rock

Chalcophanite

Formula: 
(Zn,Fe,Mn)Mn3O7·3H2O
Strunz: 
4.FL.20
Crystal System: 
Trigonal
Hardness: 
2.5
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White