Meteoritical Bulletin: Entry for Northwest Africa 13002

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Northwest Africa 13002

Basic information

Name: Northwest Africa 13002
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13002
Observed fall: No
Year found: 2019
Country: Algeria
Mass: 697 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	Eucrite-br
Recommended:			Eucrite-br [explanation]

This is 1 of 237 approved meteorites classified as Eucrite-br. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 9 Feb 2020

Writeup

help

Writeup from MB 109:

Northwest Africa 13002 (NWA 13002)

Algeria

Purchased: 2019

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased in November 2019 by Matthew Stream from Mostafa Hnini.

Physical characteristics: Single stone with weathered fusion crust.

Petrography: (D. Sheikh, FSU) Sample is a breccia composed of basaltic clasts and isolated mineral fragments present in a fine-grained matrix. Minerals present include orthopyroxene, pigeonite, augite, calcic plagioclase, troilite, SiO₂ rich glass, chromite, and ilmenite.

Geochemistry: Low-Ca Pyroxene (Fs_53.7±2.8Wo_5.4±0.4, range Fs_49.5-59.5Wo_4.7-5.9, FeO/MnO= 30±3, n=15); pigeonite (Fs_51.4±3.2Wo_8.7±2.9, range Fs_44.1-58.0Wo_6.0-17.7, FeO/MnO= 31±3, n=50); high-Ca pyroxene (Fs_29.7±3.7Wo_36.8±4.3, range Fs_25.3-37.1Wo_30.9-43.4, FeO/MnO= 30±4, n=15); calcic plagioclase (An_88.8±3.0, range An_80.4-92.9, n=20).

Classification: HED achondrite (Eucrite, brecciated)

Specimens: 26 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2019
Mass (g):	697
Pieces:	1
Class:	Eucrite-br
Shock stage:	low
Weathering grade:	moderate
Ferrosilite (mol%):	53.7±2.8, 51.4±3.2, 29.7±3.7
Wollastonite (mol%):	5.4±0.4, 8.7±2.9, 36.8±4.3
Classifier:	D. Sheikh, FSU
Type spec mass (g):	26
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

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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