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Northwest Africa 8127
Basic information Name: Northwest Africa 8127
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8127
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 529 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Lunar (gabbro)
Recommended:  Lunar (gabbro)    [explanation]

This is 1 of 9 approved meteorites classified as Lunar (gabbro).   [show all]
Search for other: Lunar meteorites
Comments: Approved 10 Jan 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8127 (NWA 8127)

(Northwest Africa)

Purchased: 2012 Mar

Classification: Lunar meteorite (gabbro)

History: Purchased by Marc Jost in March 2012 in Brugg, Switzerland from a Moroccan dealer.

Physical characteristics: Fresh, pale green stone (529 g) with cross-cutting thin, black shock veins. Apple green clinopyroxene and glassy maskelynite grains are visible.

Petrography: (A. Irving and S. Kuehner, UWS) Equigranular igneous rock (mean grain size 0.8 mm) consisting of smaller grains of olivine, Ti-bearing chromite and ilmenite (with associated baddeleyite) poikilitically enclosed in clinopyroxene (some containing fine, subparallel exsolution lamellae), with interstitial anorthitic plagioclase. Most plagioclase has been converted to maskelynite, but some grains have patchy birefringence.

Geochemistry: Olivine (Fa30.0-32.1, FeO/MnO = 90-91), pigeonite (Fs21.4-25.1Wo10.6-9.8, FeO/MnO = 46-54), subcalcic augite (Fs14.5-15.4Wo32.6-30.5, FeO/MnO = 39-42). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave (in wt.%) FeO 18.2, Na2O 0.11, and (in ppm) Sc 29.2, La 4.7, Sm 2.59, Eu 0.21, Yb 2.24, Th 0.56.

Classification: Lunar (olivine gabbro). This specimen is paired with NWA 6950 and the gabbroic lithology in NWA 773 and paired stones.

Specimens: 23.7 g, one polished thin section and a polished mount are at UWB. The main mass is held by Space Jewels Switzerland.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Brügg, Switzerland
Date:P 2012 Mar
Mass (g):529
Pieces:1
Class:Lunar (gabbro)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):30.0-32.1
Ferrosilite (mol%):21.4-25.1; 14.5-15.4
Wollastonite (mol%):10.6-9.8; 32.6-30.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.7
Type spec location:UWB
Main mass:M. Jost
Comments:MJ10; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
George Barclay   
Russ Opdahl   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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