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0 item @ $0.00  

Bornite (gold ore)

#65764

Bornite (gold ore)

#65764
Availability
Sold
Size
10 x 6 x 1.5 cm - Cabinet 
Formula
Cu5FeS4 (RRUFF)
Locality
Eskay Creek mine, Iskut River, British Columbia, Canada
Tagged
sulfide , copper , ore specimen

This specimen is from the Eskay Creek mine, a polymetallic deposit, in British Columbia. Once operated by Homestake and Barrick mining companies the mine produced 3.3 million ounces of gold and 160 million ounces of silver at average grades of 45 g/t gold and 2,224 g/t silver from 1994 -2008.  It is now owned by Skeena Gold Company, who states: "Eskay Creek is renowned for being one of the highest-grade and lowest-cost open-pit precious metal mines globally. Additionally, estimated silver by-product production will surpass many primary silver mines". They are scheduled to be back online and mining in 2027. If you are seeking employment they are  looking for all jobs from engineering to front office. Click here: https://skeenagoldsilver.com/eskay-creek/

This particular specimen is Bornite which carries values of 60-80 grams/ton Gold and 1700 grams/ton Silver.

Bornite

Formula
Cu5FeS4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Reniform, Granular 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
copper red, bronze brown, purple 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness

Data courtesy of Webmineral.

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