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Calcite With Realgar & Picropharmacolite

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BMM677329

Calcite With Realgar & Picropharmacolite

Description Tabs

Description
Locality: 
Jiepaiyu Mine, Shimen, Shimen County, Changde, Hunan Province, China (Peoples Republic)
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11.8 × 8.3 × 9.5 cm
Description

Highly lustrous calcite crystals of up to 6 cm partially covered with bright red, translucent realgar crystals and tufts of white picropharmacolite crystals of up to 1 mm. The lustrous calcite crystals are translucent with a fine striped structure one the faces. No significant damage to report; the bottom was from the rock.

Mineral Data
What's on the rock

Calcite

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

Realgar

Formula: 
As4S4
Strunz: 
2.FA.15a
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Picropharmacolite

Formula: 
Ca4Mg(AsO4)2(HAsO4)2·11H2O
Strunz: 
8.CH.15
Crystal System: 
Monoclinic Needles and encrustations
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany