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Freibergite with Chalcopyrite (ex Rich Kosnar Collection) 
Back to Consignment and Collection Auctions - Ends March 4th, 2010
Silver Stope, Eagle Mine, Gilman, Eagle County, Colorado
- Starting Time:2/25/2010 06:45:00 PM(CST)
- Ending Time:3/4/2010 06:45:00 PM(CST)
Time Left:Auction Is Closed
- Size:Miniature
- Size Description:4.6 x 3.7 x 3.1 cm
Description:Many sharp, attractive, very well-formed, classic, tetrahedral Freibergite crystals up to 2.5 mm are associated with well-formed golden crystals of Chalcopyrite and soft pink-beige "rosettes" of Siderite with minor Quartz. This specimen was a gift from the well known Colorado collector Hall Miller to Rich Kosnar in late 1983. This piece was analzyed by Hal Miller, and it is indeed Freibergite, not Tennanite or Tetrahedrite. This material is not easy to find on the market, and for the size and quality, it is much more than just a reference specimen of this highly sought after silver-bearing species.
