Meteoritical Bulletin: Entry for Northwest Africa 13134

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Northwest Africa 13134

Basic information

Name: Northwest Africa 13134
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13134
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 15 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2021)	Martian (shergottite)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 330 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 5 Apr 2020

Writeup

help

Writeup from MB 109:

Northwest Africa 13134 (NWA 13134)

(Northwest Africa)

Find: 2012

Classification: Martian meteorite (Shergottite)

History: purchased in 2013 by M. Morgan in Morocco

Physical characteristics: Physical: several pieces, some with fresh fusion crust

Petrography: (Y. Liu, JPL) Medium-grained (up to ~3 mm in length) sub-ophitic assemblage of maskelynite and pyroxenes, with accessory ulvöspinel, ilmenite, merrillite, and apatite. Ulvöspinel contains Si-rich glass. K-rich mesostasis is abundant.

Geochemistry: Minerology: Pigeonite (Fs_41±10Wo_13±2, FeO/MnO=32±3, n=17), Augite (Fs_26±8Wo_33±2, FeO/MnO=30±3, n = 4), maskelynite (An_49±3Or_2±1, n =10). Oxygen isotopes (E. Young, UCLA): 2 acid-washed fragments analyzed by laser fluorination gave δ¹⁸O= 4.503, 4.636; δ¹⁷O= 2.699, 2.770; Δ¹⁷O= 0.318, 0.318.

Classification: Martian (basaltic shergottite)

Specimens: 3 g at UCLA. The remainder is held by M. Morgan at Mile High Meteorites.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	2012
Mass (g):	15
Pieces:	2
Class:	Martian (shergottite)
Shock stage:	high
Weathering grade:	moderate
Ferrosilite (mol%):	30-56, 58-21
Wollastonite (mol%):	11-15, 17-36
Classifier:	Y. Liu, JPL
Type spec mass (g):	3
Type spec location:	UCLA
Main mass:	M. Morgan, Mile High Meteorites
Comments:	Submitted by Yang Liu

Plots:

O isotopes:

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)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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