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Franckeite

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BCK673607

Franckeite

Classic Locality

Description Tabs

Description
Locality: 
San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 4.5 × 3.6 cm
Description

You are bidding on a large and very rich example of franckeite (var. potosiite) with a very large cluster of curved, striated blades covering a quartz and pyrite matrix. There are numerous habits of the mineral present here from curls, rings, blades with curved tips and clusters of mixed habits. Very aesthetic sample that would produce numerous samples if trimmed. 

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

Seller Information

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