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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:help 697 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 171 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
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 (Fs53.7±2.8Wo5.4±0.4, range Fs49.5-59.5Wo4.7-5.9, FeO/MnO= 30±3, n=15); pigeonite (Fs51.4±3.2Wo8.7±2.9, range Fs44.1-58.0Wo6.0-17.7, FeO/MnO= 31±3, n=50); high-Ca pyroxene (Fs29.7±3.7Wo36.8±4.3, range Fs25.3-37.1Wo30.9-43.4, FeO/MnO= 30±4, n=15); calcic plagioclase (An88.8±3.0, range An80.4-92.9, 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:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 991 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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