Meteoritical Bulletin: Entry for Northwest Africa 13105

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Northwest Africa 13105

Basic information

Name: Northwest Africa 13105
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13105
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 2 kg

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	L7
Recommended:			L7 [explanation]

This is 1 of 33 approved meteorites classified as L7. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 9 Feb 2020

Writeup

Writeup from MB 109:

Northwest Africa 13105 (NWA 13105)

(Northwest Africa)

Purchased: 2018 Mar

Classification: Ordinary chondrite (L7)

History: Purchased in Agadir, Morocco, by Aziz Habibi in March 2018.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Some portions of this specimen exhibit an equigranular, triple grain junction texture whereas other portions have poikiloblastc texture (consisting of olivine chadacrysts within orthopyroxene oikocrysts). No chondrules were observed.

Geochemistry: Olivine (Fa_22.9±0.2(range Fa_22.7-23.1, N = 4), low-Ca pyroxene (Fs_19.5±0.1Wo_3.7±0.7(range Fs_19.4-19.6Wo_2.6-4.3, N = 4), high-Ca pyroxene (Fs_9.1±0.9Wo_42.0±2.2(range Fs_8.4-9.7Wo_43.5-40.4, N = 2).

Classification: Ordinary chondrite (L7).

Specimens: 28.2 g including one polished thin section at UWB; remainder with Mr. A. Habibi.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2018 Mar
Mass (g):	2000
Pieces:	many
Class:	L7
Shock stage:	low
Weathering grade:	W1
Fayalite (mol%):	22.9±0.2
Ferrosilite (mol%):	19.5±0.1
Wollastonite (mol%):	3.7±0.7
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	28.2
Type spec location:	UWB
Main mass:	A. Habibi
Comments:	Work name AH 729; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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