Meteoritical Bulletin: Entry for Northwest Africa 13949

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Northwest Africa 13949

Basic information

Name: Northwest Africa 13949
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13949
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 264 g

Classification
history:

Recommended:

CVred3 [explanation]

This is 1 of 21 approved meteorites classified as CVred3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 31 May 2021

Writeup

Writeup from MB 110:

Northwest Africa 13949 (NWA 13949)

(Northwest Africa)

Purchased: March, 2021

Classification: Carbonaceous chondrite (CVred3)

History: The meteorite was purchased from a meteorite dealer in Nouadhibou, Mauritania in early March, 2021.

Physical characteristics: Brownish rock without fusion crust.

Petrography: Carbonaceous chondrite composed of well-defined chondrules (mean diameter about 900 µm), CAIs (up to 1 cm), and olivine amoeboids all set into a fine-grained almost black matrix. Opaque phases are metal and sulfides. Some chondrules show reddish staining due to terrestrial weathering.

Geochemistry: Ni in sulfides <0.12 wt%, N=11;

Classification: Carbonaceous chondrite (CVred3). Reduced subgroup based on low 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:	Nouadhibou, Mauritania
Date:	P March, 2021
Mass (g):	264
Pieces:	1
Class:	CVred3
Shock stage:	S1
Weathering grade:	moderate
Fayalite (mol%):	7.1±6.4 (0.4-22.5, n=21)
Ferrosilite (mol%):	1.4±0.4 (0.9-2.4, n=13)
Wollastonite (mol%):	1.1±0.3 (0.9-2.2, n=13)
Magnetic suscept.:	4.28
Classifier:	A. Greshake, MNB
Type spec mass (g):	29.5
Type spec location:	MNB
Main mass:	Salamu Ali
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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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