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Franckeite

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BCK218575

Franckeite

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Description
Locality: 
Colquechaca, Chayanta Province, Potosi Department, Bolivia
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.7 × 1.2 cm
Description

You are bidding on a fantastic sample of franckeite with rich, tabular and twinned crystals lining a large vug.

Mineral Data
What's on the rock

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

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