Meteoritical Bulletin: Entry for Northwest Africa 6021

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Northwest Africa 6021

Basic information

Name: Northwest Africa 6021
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6021
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 301 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	CO3
Recommended:			CO3 [explanation]

This is 1 of 623 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 6 Oct 2019

Writeup

Writeup from MB 108:

Northwest Africa 6021 (NWA 6021)

(Northwest Africa)

Purchased: 2009

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Brownish individual partly covered with fusion crust.

Petrography: The meteorite is composed of abundant small chondrules, CAIs, and mineral fragments set into a fine-grained brownish matrix. Chondrules are dominantly of porphyritic type I and type II and have an apparent mean diameter of about 0.2 mm. Some sulfides and FeNi metal grains are present in matrix and chondrules. Some chondrules show orange staining due to terrestrial alteration.

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2009
Mass (g):	301
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	26.9±20.2 (1.3-59.7, n=11)
Ferrosilite (mol%):	2.4±1.6 (0.9-5.7, n=15)
Wollastonite (mol%):	1.0±0.4 (0.7-2.4, n=15)
Classifier:	A. Greshake, MNB
Type spec mass (g):	20.4
Type spec location:	MNB
Main mass:	Stefan Ralew
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Gregor H.
John Lutzon

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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