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Gypsum Var Selenite With Atacamite & Herbertsmithite

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GPM572783

Gypsum Var Selenite With Atacamite & Herbertsmithite

Description Tabs

Description
Locality: 
Lubin Mine, Gmina Lubin, Lubin County, Lower Silesian Voivodeship, Poland
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.6 × 5.8 × 5 cm
Largest Crystal: 
2.60cm
Description

High quality gypsum specimen from the Lubin Copper mine, Poland. Numberous tiny and thin sharply formed crystals with nice luster. Two generation of gypsum crystals which grew from both sides. It was growing in shallow pools at the depth of more than 3,200 feet below the surface from where it was excavated recently.

Color caused by rare herbertsmithite inclusions. 

Very nice display specimen.

Very fragile.

Mineral Data
What's on the rock

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

Selenite

Variety Of: 

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Hardness: 
0.0

Atacamite

Formula: 
Cu2(OH)3Cl
Strunz: 
3.DA.10a
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Type Locality: 
Atacama Region, Chile

Herbertsmithite

Formula: 
Cu3Zn(OH)6Cl2
Strunz: 
3.DA.10c
Hardness: 
3.0 - 3.5
Type Locality: 
Los Tres Presidentes Mine, Caracoles, Sierra Gorda District, Antofagasta Province, Antofagasta Region, Chile

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