Meteoritical Bulletin: Entry for Northwest Africa 13778

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Northwest Africa 13778

Basic information

Name: Northwest Africa 13778
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13778
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 620 g

Classification
history:

Recommended:

CVox3 [explanation]

This is 1 of 29 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

Writeup

Writeup from MB 110:

Northwest Africa 13778 (NWA 13778)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CVox3)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in early 2021.

Physical characteristics: Dark brownish oriented stone with some fusion crust.

Petrography: Carbonaceous chondrite composed of large, well-defined chondrules (mean diameter about 1 mm; up to 3 mm sized), up to 4 mm sized CAIs, and olivine amoeboids embedded into a fine-grained brownish-black matrix. Contains both, type I and type II chondrules. Opaque phases are metal and sulfides.

Geochemistry: Ni in sulfides 18.3±0.3 wt%, N=10.

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:	Nouadhibou, Mauritania
Date:	P 2021
Mass (g):	620
Pieces:	1
Class:	CVox3
Shock stage:	S1
Weathering grade:	low
Fayalite (mol%):	11.5±13.7 (0.3-43.8, n=18)
Ferrosilite (mol%):	1.7±1.1 (1.1-4.7, n=12)
Wollastonite (mol%):	1.8±0.7 (1.2-3.2, n=12)
Classifier:	A. Greshake, MNB
Type spec mass (g):	21.6
Type spec location:	MNB
Main mass:	Salamu Ali
Finder:	anonymous
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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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