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Northwest Africa 12366
Basic information Name: Northwest Africa 12366
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12366
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 81.5 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CO3
Recommended:  CO3    [explanation]

This is 1 of 554 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 11 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12366 (NWA 12366)

(Northwest Africa)

Purchased: April 2018

Classification: Carbonaceous chondrite (CO3)

History: Bought in April 2018 from a dealer in Zagora, Morocco.

Petrography: (A. Bischoff, IfP) Chondrules, chondrule fragments, and CAIs are embedded in a fine-grained brownish matrix, which has an abundance of about 20-30 vol%. The majority of chondrules contain Fe-poor olivine and low-Ca pyroxene and the mean apparent chondrule size is about 200 µm.

Geochemistry: (K. Klemm; A. Bischoff, IfP) Mineral compositions and geochemistry: Random measurements of olivine grains revealed Fa11.9±14.0 (Fa0.4-49.4); n=14. Random measurements of low-Ca pyroxene grains revealed Fs2.3±1.3Wo1.7±1.5 (Fs1.1-5.7Wo0.3-5.1); n=12.

Classification: CO3 chondrite based on small chondrule size, chondrule-matrix ratio, texture, and mineral chemistry.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P April 2018
Mass (g):81.5
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):11.9±14.0 (n=14)
Ferrosilite (mol%):2.3±1.3 (n=12)
Wollastonite (mol%):1.7±1.5
Classifier:K.Klemm, Addi Bischoff, IfP
Type spec mass (g):17.1
Type spec location:IfP
Main mass:Marc Jost and Sergey Vasiliev
Comments:Working No.: SM 1804-9; submitted by K. Klemm, IfP; submitted by Klemm K.
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7374 approved meteorites from (Northwest Africa) (plus 1957 unapproved names)

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