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Northwest Africa 10469
Basic information Name: Northwest Africa 10469
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10469
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 260 g
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 272 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 25 Jan 2016
Writeup from MB 105:

Northwest Africa 10469 (NWA 10469)

(Northwest Africa)

Purchased: 2015 Jul

Classification: HED achondrite (Eucrite, monomict)

History: Found at the border of Algeria and Mauritania in June 2015

Physical characteristics: One piece with fusion crust. A sawn surface shows prominent lithic clasts up to 3 cm set in a fine-grained groundmass.

Petrography: (C. Agee, UNM) Pyroxene (~65%) and plagioclase (~30%) are the major minerals in this meteorite. Some domains consist of fragmental to cataclastic mineral grains, while others show an intergranular texture. Accessory silica, ilmenite, chromite, and zircon were observed.

Geochemistry: (C. Agee and N. Muttik, UNM) Low-Ca pyroxene Fs59.4±1.2Wo1.6±0.8, Fe/Mn=35±0, n=8; high-Ca pyroxene Fs38.8±6.3Wo25.5±7.9, Fe/Mn=34±1, n=5; plagioclase An85.2±4.6, n=3.

Classification: Monomict eucrite

Specimens: 20.2 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  Table 0
  Line 0:
Date:P 2015 Jul
Mass (g):259.7
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):59.4±1.2, 38.8±6.3
Wollastonite (mol%):1.6±0.8, 25.5±7.9
Classifier:C. Agee, UNM
Type spec mass (g):20.2
Type spec location:UNM
Main mass:DPitt
Comments:Field name MAC 163; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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