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Wittichenite

#32742
SOLD
Wittichenite from Cattle Grid pit, Mt Gunson mine, Pernatty Lagoon, South Australia, Australia - 32742
Wittichenite from Cattle Grid pit, Mt Gunson mine, Pernatty Lagoon, South Australia, Australia - 32742

Wittichenite

#32742
Availability
Sold
Price
$775.00
Size
1.7 x 1.5 x 0.7 cm - Thumbnail 
Formula
Cu3BiS3 (RRUFF)
Locality
Cattle Grid pit, Mt Gunson mine, Pernatty Lagoon, South Australia, Australia
Tagged
sulfide

A large and superbly complex tabular Wittichenite crystal with a goldish or brassy irridescent patina with a backside showing a negative growth pattern. Very fine crystal!

There is an upcoming paper on this occurence, which will be published in the Australian Journal of Minerals. These brilliant, large crystals were thought to be Chalcocite until 2008 when they were confirmed as Wittichenite. Additionally, because the largest (up to 44mm!) Wittichenite crystals were only briefly mined in the early 1980's, there is a very limited quantity available on the market, especially of this quality and size.

XRD Confirmed, EDS Confirmed

Wittichenite

Formula
Cu3BiS3 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Columnar, Nodular 
Cleavage
None, None, None 
Luster
Metallic 
Color
lead gray, bronze, steel gray, tin white 
Streak
black 
Class
Orthorhombic - Disphenoidal 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

Special Info
XRD Confirmed
Special Info
EDS Confirmed
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