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Northwest Africa 12747
Basic information Name: Northwest Africa 12747
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12747
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 121 g
Meteoritical Bulletin:  MB 108  (2020)  CV3
Recommended:  CV3    [explanation]

This is 1 of 602 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 27 Jul 2019
Writeup from MB 108:

Northwest Africa 12747 (NWA 12747)

(Northwest Africa)

Purchased: 2006 June

Classification: Carbonaceous chondrite (CV3)

History: Purchased from a Moroccan mineral dealer at the meteorite show in Ensisheim, France

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 3 mm. No type II chondrules were found. Several chondrules show reddish staining due to terrestrial weathering. CAIs with sizes up to 9 mm.

Geochemistry: Mineral compositions and geochemistry: Random measurements of olivine grains revealed Fa4.9±4.0 (0.6-18; n=x); n=23. Random measurements of low-Ca pyroxene grains revealed Fs1.3±0.5 Wo1.1±0.5 (Fs0.5-2.8Wo0.6-3.0; n=22).

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

Data from:
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2006 June
Mass (g):121
Shock stage:S1
Weathering grade:Moderate
Fayalite (mol%):4.9±4.0
Ferrosilite (mol%):1.3±0.5
Wollastonite (mol%):1.1±0.5
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:IfP
Comments:Submitted by K. Metzler, IfP
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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