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 8 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 Meteoritical Bulletin, no. 110, in preparation (2021)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7859 approved meteorites from (Northwest Africa) (plus 1961 unapproved names)

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