On Offer: 185.2g Diogenite HED achondrite meteorite Official name: NWA 16081 Type: Diogenite Parent Body: Vesta or Vestoid Description: 185.2 gram main mass specimen of an amazing diogenite with extensive green pyroxene crystals and black shock veins throughout the meteorite. This amazing specimen has it all, a flat surface to display it as a complete specimen with fresh black fusion crust, a window into the interior and evidence of the kinetic force that ejected it in the form of shock veins. The HED Meteorites: The HED meteorite group is so named for the three types of meteorites that comprise the group; Howardite, Eucrite and Diogenite. The Eucrite and Diogenite have distinct mineralogies, the Howardite is a breccia of the Eucrite and Diogenite. The HEDs are differentiated achondritic meteorites thought to originate from Vesta, or a smaller Vesta-like asteroid known as a vestoid. What you get: 185.2 gram diogenite meteorite specimen which is the main mass for the 16081 classification, as shown, & signed Certificate of Authenticity. I offer a 100% no questions asked 30 day return policy. SEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW
Northwest Africa 16081 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 16081 This is an OFFICIAL meteorite name. Abbreviation: NWA 16081 Observed fall: No Year found: 2023 Country: Niger Mass: 419 g | ||||||||||||||||||||||||||||
Classification history: |
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Comments: | Approved 21 Aug 2023 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 112:
Northwest Africa 16081 (NWA 16081) Niger Purchased: January 2023 Classification: HED achondrite (Diogenite) History: Purchased by J. Eisler from a meteorite dealer in Mauritania who purchased it from the finder in Niger. Physical characteristics: Two stones of approximate equal size and one slightly smaller stone, each partially covered in black fusion crust with exposed areas showing a light colored interior with a slight green hue. Petrography: (D. Dickens, CCMS and R. G. Mayne, TCU ) This meteorite is composed predominately of orthopyroxene with subhedral grains of up to 1mm. Most orthopyroxene grains show some exsolution. Minor and accesory phases include plageoclase, Ti-chromite, and silica. Geochemistry: (D. Dickens, CCMS and R. G. Mayne, TCU ) low-Ca pyroxene: Fs24.0±0.5Wo2.2±1.2 range Fs23.9-24.5Wo1.2-4.7, FeO/MnO=28±2, ( n=8); calcic plagioclase: An82.6±0.2 range An82.4-82.7, (n=2). Classification: HED achondrite (Diogenite) Specimens: 20 g including probe mount at TCU ; remainder with Mr. J. Eisler. | ||||||||||||||||||||||||||||
Data from: MB112 Table 0 Line 0: |
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Institutions and collections | TCU : Oscar E. Monnig Collection, Department of Geology, Texas Christian University, Ft. Worth, TX 76129, United States; Website (institutional address; updated 24 Feb 2012) TM : Geoscience Museum, Transvaal Museum, P. O. Box 413, Pretoria 0001, South Africa (institutional address; updated 3 Mar 2011) |