Meteoritical Bulletin: Entry for Northwest Africa 15721

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 1 Apr 2023
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 15721

Basic information

Name: Northwest Africa 15721
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15721
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 530 g

Classification
history:

Recommended:

CVred3 [explanation]

This is 1 of 25 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 23 Feb 2023

Writeup

Writeup from MB 112:

Northwest Africa 15721 (NWA 15721)

(Northwest Africa)

Purchased: Dec 2022

Classification: Carbonaceous chondrite (CVred3)

History: The meteorite was purchased from a meteorite dealer in Tan-Tan, Morocco.

Physical characteristics: Dark brownish rock with some fusion crust.

Petrography: The meteorite shows a grayish to light brownish interior and is composed of large up to 2 mm sized chondrules, up to 1 cm sized whitish CAIs, and olivine amoeboids all set into a fine-grained matrix. Opaque phases are metal, chromite, and essentially Ni-free sulfides. Few chondrules show reddish staining due to terrestrial alteration.

Geochemistry: Ni in sulfides <0.06 wt%, N=7

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:
  MB112
  Table 0
  Line 0:

Place of purchase:	Tan-Tan, Morocco
Date:	P Dec 2022
Mass (g):	530
Pieces:	1
Class:	CVred3
Shock stage:	S1
Weathering grade:	moderate
Fayalite (mol%):	10.5±13.5 (0.3-38.1, n=21)
Ferrosilite (mol%):	1.2±0.4 (0.8-2.3, n=12)
Wollastonite (mol%):	1.0±0.2 (0.8-1.5, n=12)
Classifier:	A. Greshake, MNB
Type spec mass (g):	22.4
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. 112, in preparation (2023)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

Direct link to this page