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Northwest Africa 12713
Basic information Name: Northwest Africa 12713
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12713
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 307 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 507 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 4 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12713 (NWA 12713)

(Northwest Africa)

Find: 2018

Classification: Carbonaceous chondrite (CV3)

Petrography: (K. Metzler, IfP) Chondrules, chondrule fragments, CAIs, and AOAs are embedded in a fine-grained dark matrix (about 30 vol% matrix). Many chondrules have apparent diameters between 0.5 and 1 mm, some up to 2.5 mm. CAIs with sizes up to 2 mm are present. Accessories are Fe, Ni metal and sulfides.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa8.6±10.3 (Fa0.6-39.5; n=25). The mean low-Ca pyroxene composition is Fs1.5±0.9Wo1.0±0.3 (Fs0.4-3.8Wo0.5-1.8; n=19).

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:
  MB108
  Table 0
  Line 0:
Date:2018
Mass (g):307
Pieces:3
Class:CV3
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):8.6±10.3
Ferrosilite (mol%):1.5±0.9
Wollastonite (mol%):1.0±0.3
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Stephan Decker, Meteorite Museum, Oberwesel, Germany
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. 108, in preparation (2019)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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