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Franckeite

#41066
SOLD
Franckeite from San José mine, Oruro City, Oruro Dept., Bolivia - 41066
Franckeite from San José mine, Oruro City, Oruro Dept., Bolivia - 41066

Franckeite

#41066
Availability
Sold
Size
6 x 4.5 x 3 cm - Sm Cabinet 
Formula
Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14 (RRUFF)
Locality
San José mine, Oruro City, Oruro Dept., Bolivia
Tagged
sulfide , tin

Rare tin sulfide with total coverage of platy, silvery crystals to around 8mm with typical jagged terminations. This locality is one of the best from Bolivia, all the other localities elsewhere in the world are inferior.

Franckeite

Formula
Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14 
Crystal System
Triclinic 
Crystal Habit
Tabular, Massive - Fibrous, Radial 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
grayish black, blackish gray 
Streak
grayish black 
Class
Triclinic - Pinacoidal 
Fracture
Flexible 
Hardness
2.5 

Data courtesy of Webmineral.

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