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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:
Recommended:  CM2    [explanation]

This is 1 of 602 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
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 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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