Meteoritical Bulletin: Entry for Northwest Africa 13136

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Northwest Africa 13136

Basic information

Name: Northwest Africa 13136
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13136
Observed fall: No
Year found: 2017
Country: Algeria
Mass: 147 g

Classification
history:

Recommended:

L3 [explanation]

This is 1 of 783 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 21 Mar 2020

Writeup

Writeup from MB 109:

Northwest Africa 13136 (NWA 13136)

Algeria

Find: 2017

Classification: Ordinary chondrite (L3)

History: Purchased in 2018 by Matthew Stream from Didi Baidari in Algeria.

Physical characteristics: Single stone with dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Abundant chondrules (750±100 μm) and some clasts set in a fine-grained matrix containing accessory troilite, Fe oxides, and Fe-Ni metal.

Geochemistry: Olivine (Fa_12.0-43.5, n=30), Low-Ca Pyroxene (Fs_1.3-34.0Wo_0.2-2.1, n=60).

Classification: Ordinary Chondrite (L3) due to chondrule size and magnetic susceptibility.

Specimens: 21.78 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB109
  Table 0
  Line 0:

Date:	2017
Mass (g):	147
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	28.8±8.8 (n=30)
Ferrosilite (mol%):	15.6±9.1 (n=60)
Wollastonite (mol%):	1.0±0.5
Magnetic suscept.:	4.76
Classifier:	D. Sheikh, FSU
Type spec mass (g):	21.78
Type spec location:	UCLA
Main mass:	Matthew Stream
Comments:	Submitted by Daniel Sheikh

Institutions
and collections

UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)

Catalogs:

References:

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

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
Daniel Sheikh

Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1187 approved meteorites from Algeria (plus 28 unapproved names) (plus 4 impact craters)

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