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Valentinite Franckeite & Boulangerite

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JYJ751439

Valentinite Franckeite & Boulangerite

Description Tabs

Description
Locality: 
Huanuni Mine, Huanuni, Dalence Province, Oruro Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 4.5 × 4.5 cm
Description

Beautiful sparkling colourless valentinite (EDS & Raman confirmed; 19-10-16-bol39) on massive boulangerite and impregnations of franckeite. 

 

Mineral Data
What's on the rock

Valentinite

Formula: 
Sb2O3
Strunz: 
4.CB.55
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Les Chalanches Mine, Allemont, Isère, Rhône-Alpes, France

Franckeite

Formula: 
Fe2+(Pb,Sn2+)6Sn4+2Sb2S14
Strunz: 
2.HF.25b
Hardness: 
2.5 - 3.0
Type Locality: 
Chocaya mine, Chocaya-Animas (Animas-Chocaya), Atocha-Quechisla District, Sud Chichas Province, Potosí Department, Bolivia

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