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Chalcophanite

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PDM930846

Chalcophanite

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Description
Locality: 
Las Herrerías Mines, Las Herrerías, Sierra Almagrera, Almería, Andalusia, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.9 × 1.5 × 1 cm
Description

Very aerial and aesthetic arborescent growth of chalcophanite with some relicts of reddish gypsum matrix. I let these specimens to be fast checked by APXS and chalcophanite was the result.

Found by Wiliam De Bruycker in 1987-88.

Combine specimens to reduce shipping costs!.

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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