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Northwest Africa 8651
Basic information Name: Northwest Africa 8651
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8651
Observed fall: No
Year found: 2014
Country: Mauritania
Mass:help 598 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Lunar, granulitic troctolitic breccia
Recommended:  Lunar    [explanation]

This is 1 of 89 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8651 (NWA 8651)

Mauritania

Found: April 2014

Classification: Lunar, granulitic troctolitic breccia

Physical characteristics: A single, gray-colored stone lacking fusion crust. Small white clasts are visible in a pale, finer grained matrix.

Petrography: Fragments of plagioclase (300 to 500 μm) set in recrystallized matrix of fine-grained (~20 μm) olivine, pigeonite, and plagioclase. Olivine fragments (~100 μm) are less abundant. Plagioclase 60-65 vol%, olivine 20 vol%. Accessory phases include troilite, schreibersite, and FeNi metal.

Geochemistry: Plagioclase, An95.3±1.1Ab4.4±0.9Or0.3±0.2 (An94.4-97.4Ab2.6-5.2Or0-0.6, n=7); olivine, Fa25.6±0.4 (Fa25-26.2, FeO/MnO = 86.1-112.4, n=8); pigeonite, Fs20.7±1.4Wo6.7±1.8 (Fs18-22.4Wo4.4-10.7, FeO/MnO = 50-55.8, n=10).

Classification: Lunar, granulitic troctolitic breccia

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Changsha China
Date:April 2014
Mass (g):598
Pieces:1
Class:Lunar, granulitic troctolitic breccia
Weathering grade:low
Fayalite (mol%):25.6±0.4
Ferrosilite (mol%):20.7±1.4
Wollastonite (mol%):6.7±1.8
Classifier:Wu Y., PMO
Type spec mass (g):20
Type spec location:PMO
Main mass:Ke Zuokai
Comments:Submitted by Hsu W.
Institutions
   and collections
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 127 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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