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Northwest Africa 12343
Basic information Name: Northwest Africa 12343
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12343
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 526 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 502 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 14 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12343 (NWA 12343)

(Northwest Africa)

Purchased: 2018 Mar

Classification: Carbonaceous chondrite (CV3)

Petrography: (K. Metzler, IfP) Chondrules, CAIs and AOAs are embedded in a fine-grained dark matrix (about 30 vol% matrix). Most chondrules have apparent diameters between 0.3 and 1.5 mm, some up to 2.2 mm. Several chondrules show reddish staining due to terrestrial weathering. A slight alignement of chondrules is visible. CAIs with sizes of a few mm are observed.

Geochemistry: Mineral compositions and geochemistry: Random measurements of olivine grains revealed Fa7.4±2.7 (Fa1.3-12.7; n=26); n=23. Random measurements of low-Ca pyroxene grains revealed Fs1.8±0.8Wo1.6±1.2 (Fs0.8-3.6Wo0.8-4.4; n=13).

Classification: CV chondrite based on CAI and AOA occurrence, size of chondrules, chondrule-matrix ratio, and mineral chemistry. Petrologic type 3 based on the chemical variation of olivine and pyroxene.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Ouarzatate, Morocco
Date:P 2018 Mar
Mass (g):526
Pieces:many
Class:CV3
Shock stage:S3
Weathering grade:moderate
Fayalite (mol%):7.4
Ferrosilite (mol%):1.8
Wollastonite (mol%):1.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP, Münster
Main mass:Nourddine Azelmat, Morocco
Comments:Submitted by K. Metzler, IfP
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, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6846 approved meteorites from (Northwest Africa) (plus 2038 unapproved names)

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