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Northwest Africa 10892
Basic information Name: Northwest Africa 10892
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10892
Observed fall: No
Year found: 2016
Country: Mauritania
Mass:help 250 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  CK3
Recommended:  CK3    [explanation]

This is 1 of 75 approved meteorites classified as CK3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites
Comments: Approved 18 Nov 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10892 (NWA 10892)

Mauritania

Purchased: April 2016

Classification: Carbonaceous chondrite (CK3)

History: Found by meteorite hunters during an expedition near the Western Saharan, Algerian and Mauritanian border region. Purchased in Mauritania.

Physical characteristics: Weathered exterior A saw cut reveals scattered chondrules and CAIs set in a gray-brown groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a variety of chondrule types, fine grained, recrystallized groundmass makes up ~60% of this meteorite. Aluminous diopside, aluminous enstatite, and two distinct plagioclase compositions detected; magnetite present.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa29.9±4.7, Fe/Mn=133±14, NiO=0.27±0.13 (wt%), Cr2O3=0.05±0.04 (wt%), n=10; Orthopyroxene Fs1.9Wo6.3, Aluminous diopside Fs4.7±7.4Wo43.2±2.8, Al2O3=6.8±3.7 (wt%) n=5; bytownite An83.4±1.2Ab16.4±1.2Or0.3±0.0, n=2; andesine An39.5±2.1Ab58.4±2.1Or2.2±0.0, n=2.

Classification: Carbonaceous chondrite (CK3)

Specimens: 20.0 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P April 2016
Mass (g):249.5
Pieces:1
Class:CK3
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):29.9±4.7
Ferrosilite (mol%):1.9, 4.7±7.4
Wollastonite (mol%):6.3, 43.2±2.8
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:DPitt
Comments:Field name MVCH74; submitted by C. Agee, UNM
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 187 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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