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Baryte With Boulangerite & Calcite

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BMM706378

Baryte With Boulangerite & Calcite

Description Tabs

Description
Locality: 
Baia Mare, Maramureș County, Romania
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2.7 cm
Description

A group of barites with high gloss and finely structured surfaces. The crystals are light yellow transparent and partially gray colored by felted dark gray boulangerite sprays. The main crystal measures over 2 cm. Additionally, small pale yellow and colorless calcites have grown on the barite crystals. Well crystallized as undamaged floater specimen!

Mineral Data
What's on the rock

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White

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