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Northwest Africa 13656
Basic information Name: Northwest Africa 13656
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13656
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 811 g
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 16 Jan 2021
Writeup from MB 110:

Northwest Africa 13656 (NWA 13656)

(Northwest Africa)

Purchased: 2020 Sep

Classification: Carbonaceous chondrite (CV3)

Petrography: (K. Metzler, IfP) Chondrules, CAIs and AOAs are embedded in a fine-grained dark matrix (about 40 vol% matrix). Most chondrules have apparent diameters between 0.3 and 1.5 mm, some up to 3 mm. Type II chondrules are rare. Opaque minerals are magnetite, pentlandite and traces of Ni-rich metal (Fe30Ni70).

Geochemistry: Mineral compositions and geochemistry: Random measurements of olivine grains revealed Fa8.4±12.6 (Fa0.3-36.3); n=16. Random measurements of low-Ca pyroxene grains revealed Fs1.3±0.6Wo2.2±1.5 (Fs0.6-2.5Wo0.9-4.3); n=12.

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:Morocco
Date:P 2020 Sep
Mass (g):811
Shock stage:C-S1
Weathering grade:low
Fayalite (mol%):8.4±12.6
Ferrosilite (mol%):1.3±0.6
Wollastonite (mol%):2.2±1.5
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Mirko Graul, Bernau, Germany
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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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