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0 item @ $0.00  

Stannite

#BW56948

Stannite

#BW56948
Availability
Available
Price
$75.00
Size
5 x 3.5 x 3 cm - Miniature 
Reduced Price
$40.00
Formula
Cu2FeSnS4 (RRUFF)
Locality
Cligga mine, Perranzabuloe, Cornwall, England
Tagged
sulfide , copper , tine

A 3cm dark purplish mass of Stannite and Ferrokesterite from an ore vein which is still attached to wall-rock from this important locality. The mine itself is located on Cligga Head on the coast of the west side Cornwall.  Note that the three tin minerals from here (asside from Cassiterite) - Stannite, Ferrokesterite, and Kesterite can look a lot alike and often occur together. So with this specimen, you probably are getting all three. It's a good ore specimen which shows metallic mineralization and a band of outer mica alongside the wall-rock.

Stannite

Formula
Cu2FeSnS4 
Crystal System
Tetragonal 
Crystal Habit
Massive - Granular, Crystalline - Fine 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
blue, grayish black, steel gray 
Streak
black 
Class
Tetragonal - Scalenohedral 
Fracture
Uneven 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Bill Wilson Collection
Mineralpedia
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Other Available Stannite
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