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Galena On Dolomite

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BMM706489

Galena On Dolomite

Description Tabs

Description
Locality: 
Sayari Mine, Cerro Sayari, Arque Province, Cochabamba Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.7 × 7.4 × 7.2 cm
Description

Matt glossy galena on bright dolomite matrix. The galena crystals are partially fused together with cubic structure on the faces. The matrix is equally interesting: bright small dolomite crystals overgrow large tabular crystals with an edge length of 5.5 cm (also dolomite?). Very unusual material that is not offered on the market.

Mineral Data
What's on the rock

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
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