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Northwest Africa 10209
Basic information Name: Northwest Africa 10209
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10209
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 137 g
Meteoritical Bulletin:  MB 104  (2015)  CK6
Recommended:  CK6    [explanation]

This is 1 of 75 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 18 Jul 2015
Writeup from MB 104:

Northwest Africa 10209 (NWA 10209)

(Northwest Aftica)

Purchased: 2015

Classification: Carbonaceous chondrite (CK6)

History: Purchased by Adam Aaronson in Morocco, 2015.

Physical characteristics: Weathered exterior, some oxidation. A saw cut reveals scattered chondrules, up to 3 mm, in a very fine-grained, dark-gray groundmass. A few small CAIs are visible.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows texturally equilibrated chondrules, plagioclase grains up to 100 μm. Fe-Ni metal, troilite and magnetite were observed.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fs31.3±0.2, Fe/Mn=118±10, NiO=0.44±.08 (wt%), n=10; low-Ca pyroxene Fs26.7±0.5Wo1.0±0.8, Fe/Mn=71±5, n=10.

Classification: Carbonaceous chondrite (CK6)

Specimens: 20.3 g including a probe mount on deposit at UNM; Aaronson holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):137
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):31.3±0.2
Ferrosilite (mol%):26.7±0.5
Wollastonite (mol%):1.0±0.8
Classifier:C. Agee, UNM
Type spec mass (g):20.3
Type spec location:UNM
Main mass:Aaronson
Comments:M1830; submitted by C. Agee
   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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
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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     This is 1 of 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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