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Cryolite with Thomsenolite (rare) viewBack to SPECIAL MINERAL AUCTION - $499 RESERVE LIQUIDATION SPECIMENS - ends Thursday, January 24, 2019

Ivigtut Cryolite deposit, Ivittuut, Arsuk Fjord, Sermersooq, Greenland (Type Locality for both species)
  • Starting Time:1/17/2019 06:45:00 PM(CST)
  • Ending Time:1/24/2019 06:45:00 PM(CST)
  • Time Left:Auction Is Closed

  • Size:Toenail
  • Size Description:3.2 x 2.4 x 2.1 cm

Description:These rare and unusual halide species are best known from Greenland, where the finest examples are found. Cryolite dates back to 1799, and gets its name from the Greek words meaning "ice stone" due to the appearance of the crystals. Thomsenolite dates back to 1868 and is named after Hans Peter Jorgen Julius Thomsen who has a chemistry professor at the University of Copenhagen in Denmark. The habit of both species is actually monoclinic, though the Cryolites look cubic, they are only cuboidal. Interestingly enough, Cryolite inverts to an isometric (cubic) form at about 560 degrees when heated! This is a classic specimen of this beloved association from the type locality for both species Ivigtut Cryolite Deposit in Greenland. If you collect rarities, or if you've ever wanted a piece of the interesting and unusual mineral, don't miss out on a chance to obtain a well-crystallized example from this historic deposit. Valued at $2,100 in the inventory.

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