-40%
NWA 8172 Ureilite 1.96g Slice of Olivine-Pigeonite Achondrite
NWA 8172 Ureilite 1.96g Slice of Olivine-Pigeonite Achondrite
NWA 8172 Ureilite 1.96g Slice of Olivine-Pigeonite Achondrite

NWA 8172 Ureilite 1.96g Slice of Olivine-Pigeonite Achondrite

$ 20.59

Availability: 100 in stock
  • Item must be returned within: 14 Days
  • All returns accepted: Returns Accepted
  • Restocking Fee: No
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Buyer

    Description

    Item for auction is a
    1.96g
    slice of my NWA 8172 ureilite meteorite that I bought in Morocco in September 2013 as a 334g lot of two stones. Dr Tony Irving analyzed the specimen and report it as a protogranular aggregate of olivine and pigeonite. Grain boundary regions have distinctive dark, reduced, metal-rich zones. Geochemistry consists of Olivine (cores Fa24.1; reduced rims Fa12.0), pigeonite (Fs19.6-19.7Wo7.6-8.0). Compared to most other meteorites, ureilites tend to have a high percentage of carbon (average 3% by weight) in the form of graphite and nanodiamonds. The diamonds, which are rarely more than a few micrometres in diameter, are probably the result of high pressure shockwaves produced by collisions of the ureilite parent body with other asteroids. This specimen comes in a quality labeled display case for protection and years of viewing pleasure, along with a Big Kahuna Meteorites Certificate of Authenticity. Scale cube is 1cm on each side and not included.
    Big Kahuna combines shipping, and addresses must be in the English language, to facilitate customs input at US Postal Service. Non-English addresses cannot be shipped, and may incur additional fees for handling. We no longer ship to Italy.
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