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Franckeite

#56175
SOLD
Franckeite from San José mine, Oruro City, Oruro Dept., Bolivia - 56175
Franckeite from San José mine, Oruro City, Oruro Dept., Bolivia - 56175

Franckeite

#56175
Availability
Sold
Size
5 x 4 x 3 cm - Miniature 
Formula
Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14 (RRUFF)
Locality
San José mine, Oruro City, Oruro Dept., Bolivia
Tagged
sulfide , tin

Platy black metallic crystals of Franckeite to 4mm in a 3.5cm vein adjacent to Pyrite. Nice rich specimen identified by EDS.

EDS Confirmed

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.

Special Info
EDS Confirmed
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