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Northwest Africa 13543
Basic information Name: Northwest Africa 13543
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13543
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 4.4 kg
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 553 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 Dec 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13543 (NWA 13543)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CV3)

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

Physical characteristics: Many light-grayish to greenish fragments, some of them with patches of fusion crust.

Petrography: The meteorite displays a grayish to dark-greenish interior and is composed of chondrules (mean diameter about 1 mm; up to 2.5 mm sized), large up to 1 cm sized CAIs, and olivine amoeboids embedded into a fine-grained, brownish-black matrix. Contains both, type I and type II chondrules. Several chondrules show reddish staining due to terrestrial alteration. Opaque phases are metal often occurring as blebs in chondrules, and sulfides. Both phases are sometimes altered to iron oxides.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2020
Mass (g):4400
Pieces:many
Class:CV3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):13.3±16.2 (0.5-43.0, n=15)
Ferrosilite (mol%):1.3±0.3 (1.0-1.7, n=11)
Wollastonite (mol%):1.3±0.3 (0.9-2.1, n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):22.8
Type spec location:MNB
Main mass:Said Yousfi
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. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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