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Northwest Africa 11102
Basic information Name: Northwest Africa 11102
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11102
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 1860 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CV3
Recommended:  CV3    [explanation]

This is 1 of 536 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 19 Feb 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11102 (NWA 11102)

Morocco

Purchased: 2016 Dec

Classification: Carbonaceous chondrite (CV3)

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

Physical characteristics: The meteorite is covered by a dark-brown fusion crust. Abundant round chondrules ranging from white to dark gray are visible.

Petrography: The thin section shows abundant well-defined chondrules (ranging from 0.3 to 1.5 mm with most being mm-sized) set in a fine-grained matrix. Most of the chondrules have porhyritic texture, and some of them are surrounded by igneous rims or opaque minerals. Fe-rich augite is identified within fine-grained inclusions associated with fayalitic olivine, orthopyroxene and altered minerals. A few fragments of CAIs consisting of Al, Ca-pyroxene and saponite were identified in this thin section. The matrix abundance is approximately 42%. Other accessory phases include metal, troilite and Fe-oxides.

Geochemistry: Silicates are unequilibrated. Olivine Fa0.7-51.3 (Fa16.8±13.6; PMD=67.1%, n=48); low-Ca pyroxene Fs2.5-31.1Wo0-4.9 (Fs13.7±8.9Wo1.3±1.4, Fs PMD=51.5%, n=27); pigeonite Fs23.6-29.8Wo5.1-13.0; minor augite Fs17.8Wo30.3.

Classification: CV3 classification based on mm-sized chondrules with mostly porhyritic textures and the presence of AOA and altered minerals.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Beijing China
Date:P 2016 Dec
Mass (g):1860
Pieces:1
Class:CV3
Shock stage:medium
Weathering grade:medium
Fayalite (mol%):16.8±13.6 (n=48)
Ferrosilite (mol%):13.7±8.9 (n=27); 26.8±3.1 (n=3); 17.8 (n=1)
Wollastonite (mol%):1.3±1.4 (n=27); 8.3±4.1 (n=3); 30.3 (n=1)
Classifier:Wu Y., PMO
Type spec mass (g):20
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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1488 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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