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Northwest Africa 13844
Basic information Name: Northwest Africa 13844
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13844
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 4.13 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  CM2
Recommended:  CM2    [explanation]

This is 1 of 633 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 8 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13844 (NWA 13844)

(Northwest Africa)

Purchased: 2020 Jan

Classification: Carbonaceous chondrite (CM2)

Petrography: (J. Gattacceca, CEREGE) Chondrules with average apparent diameter 390±320 µm (n=8) set in abundant iron-rich fine-grained matrix. Chondrules have distinct fine-grained dust rims with radial fractures. Accessory minerals: sulfides, rare metal (mostly enclosed in silicates). Calcium carbonates are present. Matrix low EMPA analytical totals indicate the presence of hydrous phases.

Geochemistry: Olivine Fa7.9±8.6, range Fa0.6-25.6 (n=6). Cr2O3 in ferroan olivine 0.53±0.16 wt%. Low-Ca pyroxene Fs3.6Wo0.9 (n=2). Defocused matrix analyses: FeO 22.3±0.4 wt%, analytical total 80.0±0.3 (n=3).

Classification: Carbonaceous chondrites (CM2)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Guelmim, Morocco
Date:P 2020 Jan
Mass (g):4.13
Pieces:1
Class:CM2
Weathering grade:high
Fayalite (mol%):7.9±8.6 (n=6)
Ferrosilite (mol%):3.6 (n=2)
Wollastonite (mol%):0.9
Magnetic suscept.:3.04
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):0.85
Type spec location:CEREGE
Main mass:Pierre-Marie Pele
Finder:anonymous
Comments:work name PM20AC3; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
Catalogs:
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)
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Revision
  history:
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