Meteoritical Bulletin: Entry for Northwest Africa 13033

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Northwest Africa 13033

Basic information

Name: Northwest Africa 13033
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13033
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 57 kg

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	L3
Recommended:			L3 [explanation]

This is 1 of 714 approved meteorites (plus 1 unapproved name) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 23 Dec 2019

Writeup

Writeup from MB 108:

Northwest Africa 13033 (NWA 13033)

(Northwest Africa)

Purchased: 2019 Sep

Classification: Ordinary chondrite (L3)

History: Purchased in Temara, Morocco, by Adam Aaronson in September 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Closely packed, well-formed chondrules (apparent diameter 610±200 µm, N = 20) are set in a sparse matrix containing stained metal.

Geochemistry: Olivine (Fa_23.6±11.2(range Fa_0.9-33.2, N = 10; Cr₂O₃ in ferroan examples 0.03-0.17 wt.%, mean 0.06±0.04 wt.%, N = 13), low-Ca pyroxene (Fs_14.6±11.3Wo_1.0±0.6(range Fs_4.7-24.5Wo_0.4-1.7, N = 4), high-Ca pyroxene (Fs_4.7±2.5Wo_38.8±2.7(range Fs_2.9-6.4Wo_34.7-30.9, N = 2).

Classification: Ordinary chondrite (L3).

Specimens: 30.2 g including one polished thin section and one polished mount at UWB; remainder with Aaronson.

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	?Temara
Date:	P 2019 Sep
Mass (g):	57000
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	23.6±11.2
Ferrosilite (mol%):	14.6±11.3
Wollastonite (mol%):	1.0±0.6
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	30.2
Type spec location:	UWB
Main mass:	A. Aaronson
Comments:	Work name M2140; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)

Catalogs:

References:

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

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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