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Chalcophanite

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CSL220899

Chalcophanite

Rare Mineral

Description Tabs

Description
Locality: 
Villia Mines, Plaka, Lavrion District, Attiki Prefecture, Greece
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2 × 1.8 cm
Description

Chalcophanite is an uncommon Zn-Mn-oxide mineral, it forms small black crystals and their radiating aggregates on matrix.

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

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