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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 14 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 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 8037 approved meteorites from (Northwest Africa) (plus 1947 unapproved names)

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