Meteoritical Bulletin: Entry for Northwest Africa 13542

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Northwest Africa 13542

Basic information

Name: Northwest Africa 13542
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13542
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 80 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2021)	CV3
Recommended:			CV3 [explanation]

This is 1 of 481 approved meteorites (plus 2 unapproved names) 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

Writeup

Writeup from MB 109:

Northwest Africa 13542 (NWA 13542)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CV3)

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

Physical characteristics: Many dark-grayish fragments without fusion crust.

Petrography: The meteorite displays a fresh almost black interior and is composed of chondrules (mean diameter about 0.9 mm; up to 1.9 mm sized), CAIs (up to 4 mm sized), and olivine amoeboids all set into a fine-grained matrix. Contains both, type I and type II chondrules. No chondrules showing reddish staining have been observed. 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):	80
Pieces:	many
Class:	CV3
Shock stage:	S1
Weathering grade:	moderate
Fayalite (mol%):	11.0±12.0 (0.6-34.7, n=16)
Ferrosilite (mol%):	1.2±0.2 (1.0-1.7, n=13)
Wollastonite (mol%):	1.1±0.4 (0.9-2.4, n=13)
Classifier:	A. Greshake, MNB
Type spec mass (g):	16
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 Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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