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Boulangerite & Calcite

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PDM666175

Boulangerite & Calcite

Description Tabs

Description
Locality: 
Herja Mine, Chiuzbaia, Baia Mare, Maramureș County, Romania
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6.1 × 2.8 cm
Largest Crystal: 
1.40cm
Description

Flattened calcite rhombohedra included by thousands of metallic grey acicular boulangerite crystals that are also filling the spaces between calcite crystals. An aesthetic representative sample from the Herja Mine.

Ex. Gerard Vogel specimen, who bought it in 1983.

Mineral Data
What's on the rock

Boulangerite

Formula: 
Pb5Sb4S11
Strunz: 
2.HC.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Colour: 
Lead grey
Streak: 
Brownish
Type Locality: 
Molières, Gard, Languedoc-Roussillon, France

Calcite

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

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