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Northwest Africa 10800
Basic information Name: Northwest Africa 10800
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10800
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 3.59 kg
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 228 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 24 Sep 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10800 (NWA 10800)

(Northwest Africa)

Purchased: 2016 Feb

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Matthew Martin in February 2016 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Rounded clasts of shocked basaltic eucrite occur in a sparse dark brown, fine grained matrix. Minerals are exsolved pigeonite (some with orange-brown cores), calcic plagioclase (polycrystalline), silica polymorph, ilmenite and Ti-chromite, with rare zircon (grains up to 5 μm), troilite and minor secondary barite.

Geochemistry: Low-Ca pyroxene host (Fs58.9-60.5Wo5.0-2.7, FeO/MnO = 29-32, N = 3), clinopyroxene exsolution lamellae (Fs26.5-28.6Wo43.5-41.7, FeO/MnO = 29-30, N = 2).

Classification: Eucrite (monomict breccia).

Specimens: 41.49 g including one polished thin section at UWB; remainder with Mr. M. Martin.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2016 Feb
Mass (g):3585
Pieces:1
Class:Eucrite-mmict
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):58.9-60.5; 26.5-28.6
Wollastonite (mol%):5.0-2.7; 43.5-41.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):41.49
Type spec location:UWB
Main mass:M. Martin
Comments:MM16-3; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
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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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
KD Meteorites   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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