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Northwest Africa 13853
Basic information Name: Northwest Africa 13853
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13853
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 835 g
Classification
  history:
Recommended:  CVox3    [explanation]

This is 1 of 25 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13853 (NWA 13853)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CVox3)

History: The meteorite was purchased from a dealer in Morocco.

Physical characteristics: Brownish rock with minor fusion crust. Exposes very large, up to 3 cm sized chondrules at its surface.

Petrography: Carbonaceous chondrite exhibits a grayish to slightly greenish interior and is composed of large well-defined chondrules, up to 6 mm sized CAIs, and olivine amoeboids embedded into a fine-grained brownish-black matrix. Chondrule apparent mean diameter is 1.1 mm with a maximum of about 7 mm in the thin section and slice studied. At the meteorite surface up to 3 cm sized chondrules are visible. Contains type I and type II chondrules. Several chondrules show brownish staining due to terrestrial alteration. Opaque phases are rare metal and sulfides and their abundant alteration products.

Geochemistry: Ni in sulfides 17.7±2.1 wt%, N=4.

Classification: Carbonaceous chondrite (CVox3). Oxidized subgroup based on high concentrations of Ni in sulfides Gattacceca et al., 2020.

Bibliography:
  • Gattacceca J.,Bonal L.,Sonzognia C., and Longereya J. (2020) CV chondrites: More than one parent body. Earth Planet. Sci. Letts. 547, 116467. (link)
Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):835
Pieces:1
Class:CVox3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):8.8±10.3 (0.2-30.2, n=15)
Ferrosilite (mol%):0.7±0.2 (0.5-1.1, n=10)
Wollastonite (mol%):0.9±0.1 (0.8-1.0, n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):20.4
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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