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Northwest Africa 10189
Basic information Name: Northwest Africa 10189
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10189
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 82 g
Classification
  history:
Recommended:  CR2    [explanation]

This is 1 of 188 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 5 Dec 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 10189 (NWA 10189)

Morocco

Find: 2014

Classification: Carbonaceous chondrite (CR2)

History: Aziz Habibi purchased the stone from a meteorite hunter traveling from southern Morocco. The stone was purchased from Aziz Habibi by UCLA.

Physical characteristics: The meteorite consisted of a flattened, irregular stone. It exhibits ~50% weathered fusion crust; the rest of the surface is desert-varnished and very irregular.

Petrography: (J. Utas, UCLA) Spherical metal blebs are abundant in both matrix and chondrules, measuring up to 1.5 mm across. Chondrules average ~1.1 mm in diameter, and are set in a fine-grained, Fe and FeS-rich matrix. Chondrules are predominantly type IA, PO, and many exhibit igneous rims. The thin-section examined exhibits two coherent ~5 mm. Fine-grained carbonaceous clasts with abundant disseminated FeS. No CAIs were observed. Large metal blebs exhbit thin oxide rims, and fine-grained metal in the matrix is heterogeneously oxidized. Some chondrules appear unweathered, while others retain no unoxidized metal. Limonite and some carbonate veins are present.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:2014
Mass (g):82
Pieces:1
Class:CR2
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):5.92±10.59 (n=22)
Ferrosilite (mol%):3.07±0.92 (n=17)
Classifier:J. Utas, UCLA
Type spec mass (g):82
Type spec location:UCLA
Main mass:UCLA
Comments:Submitted by J. Utas
Institutions
   and collections		 UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1992 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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