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Northwest Africa 8753
Basic information Name: Northwest Africa 8753
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8753
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 1345 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 343 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 10 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8753 (NWA 8753)

(Northwest Africa)

Purchased: 2014 Sep

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Darryl Pitt in September 2014 from a dealer in Laayoune, Morocco.

Physical characteristics: Single stone (1345 g) consisting of white and dark gray clasts in a medium gray matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed of angular mineral clasts (anorthite, olivine, orthopyroxene, augite, exsolved pigeonite, chromite, troilite, kamacite) and sparse glass fragments (with composition equivalent to low-Ca pyroxene + anorthite) in a finer grained matrix. Rare grains of forsteritic olivine are present and are associated with Cr-pleonaste spinel.

Geochemistry: Olivine (Fa17.9; Fa35.6; Fa9.8-10.7; FeO/MnO = 89-146; N = 5), orthopyroxene (Fs26.9-44.0Wo3.1-3.6, FeO/MnO = 65-79, N = 3), augite (Fs17.5-17.9Wo44.7-41.7, FeO/MnO = 43-53, N = 2), plagioclase (An95.0-97.4Or0.2-0.1, N = 3). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 3.0, Na2O 0.36; (in ppm) Sc 4.9, La 1.7, Sm 0.8, Eu 0.79, Yb 0.6, Lu 0.15, Th 0.3.

Classification: Lunar (feldspathic fragmental breccia). This specimen is notably felsic in comparison to other lunar feldspathic breccias, and contains accessory forsteritic olivine associated with Cr-pleonaste..

Specimens: 20.4 g including one polished thin section and a polished endcut at UWB; the remainder is held by DPitt.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2014 Sep
Mass (g):1345
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):9.8-35.6
Ferrosilite (mol%):26.9-44.0; 17.5-17.9
Wollastonite (mol%):3.1-3.6; 44.7-41.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.4
Type spec location:UWB
Main mass:D. Pitt
Comments:MAC 0075; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
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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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Solar Anamnesis      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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