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Northwest Africa 11113
Basic information Name: Northwest Africa 11113
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11113
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 470 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 495 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 9 Apr 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11113 (NWA 11113)

Morocco

Find: 2016

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Ke Zuokai in Dec. 2016 from a Moroccan dealer.

Physical characteristics: The meteorite has a black fusion crust.

Petrography: Abundant small well-defined chondrules (50-300 μm) and a few fine-grained CAIs set in fine-grained matrix. Most chondrules appear to be Type I with or without pyroxene, and a small amount of Type II chondrules are present. Metal and sulfide occur within and around the chondrules. 

Geochemistry: Olivine Fa0.6-49.7, Cr2O3 in ferroan olivine 0.01-0.15 wt.%, mean 0.0±0.03 wt.%, N = 25; In detail, the cores of olivine in Type I chondrules are rich in magnesium, and the Fa values are between 0.6-10.6. In comparison, the rims of olivine in some Type I chondrules and the grains in Type II chondrules have higher Fe contents (Fa22.9-49.7). Cr2O3 in ferroan olivine 0.01-0.15 wt.%, mean 0.07±0.03 wt.%, N = 25; orthopyroxene Fs0.9-4.3Wo0.7-5.3; clinopyroxene Fs1.0-9.5Wo30.1-40.0, Fs1.0-6.1Wo43.1-49.5.

Classification: CO3

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Beijing
Date:2016
Mass (g):470
Pieces:1
Class:CO3
Shock stage:low
Weathering grade:weak
Fayalite (mol%):5.0±2.6 (n=16); 36.7±8.4 (n=25)
Ferrosilite (mol%):1.9±0.9 (n=15); 4.5±3.0 (n=12); 2.4±1.9 (n=6)
Wollastonite (mol%):1.9±1.4 (n=15); 36.1±3.5 (n=12); 46.3±2.1 (n=6)
Classifier:Li Y., PMO
Type spec mass (g):27
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. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1299 approved meteorites from Morocco (plus 12 unapproved names) (plus 1 impact crater)

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