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Valleriite with Magnetite

#PD34290

Valleriite with Magnetite

#PD34290
Availability
Sold
Size
12 x 8 x 8 cm - Cabinet 
Formula
2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)2] (RRUFF)
Locality
Whitehorse Cu Belt, Whitehorse dist., Yukon Territory, Canada
Tagged
sulfide

Large ore specimen loaded with mostly bronze colored Valleriite as shown in the photos. Also in association is Magnetite, which constitutes most of the matrix and perhaps a bit of Pyrrhotite. Bornite is also present as large crystal grains showing the typical blue iridescence. A great rich piece which has obviously had some work done analytically as you can see the sawed flat side. Looking closely at this specimen you can also detect some parallel fabric, which may be slickenside surfaces. Whitehorse Copper belt is an important historic Yukon mining district with reserves in the hundreds of millions of dollars.

Valleriite

Formula
2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)2
Crystal System
Trigonal 
Crystal Habit
Massive, Nodular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
bronze, gray 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
1-1.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

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