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Northwest Africa 10271
Basic information Name: Northwest Africa 10271
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10271
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 16.6 g
Meteoritical Bulletin:  MB 104  (2015)  Enst achon
Recommended:  Enst achon    [explanation]

This is 1 of 11 approved meteorites classified as Enst achon.   [show all]
Search for other: Achondrites, Enstatite achondrites, and Enstatite-rich meteorites
Comments: Approved 3 Oct 2015
Writeup from MB 104:

Northwest Africa 10271 (NWA 10271)

(Northwest Africa)

Purchased: 2014 Feb

Classification: Enstatite achondrite

History: Purchased by Dr. David DGregory in February 2014 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Aggregate of ~54 vol.% enstatite and ~45 vol.% kamacite with accessory daubreelite, schreibersite and diopside, plus rare heideite and perryite.

Geochemistry: Enstatite (Fs0.1-0.4Wo0.4-0.3, N = 3), kamacite (mean of 3 in wt.%: Ni 5.8, Co 0.4, Si 1.9, P 0.2).

Classification: Enstatite achondrite (metal-rich). This specimen is much too metal-rich to be regarded as an aubrite.

Specimens: The entire specimen including a polished probe mount is at ROM.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014 Feb
Mass (g):16.56
Class:Enst achon
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):0.1-0.4
Wollastonite (mol%):0.4-0.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):16.56
Type spec location:ROM
Main mass:DGregory
Comments:DGR017-14; submitted by A. Irving
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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