Meteoritical Bulletin: Entry for Northwest Africa 5134

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Northwest Africa 5134

Basic information

Name: Northwest Africa 5134
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5134
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass: 61.6 g

Classification
history:

Meteoritical Bulletin:	MB 93	(2008)	Eucrite
Recommended:			Eucrite [explanation]

This is 1 of 616 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 6 Mar 2008
Revised 4 Aug 2008: final writeup

Writeup

help

Writeup from MB 93:

Northwest Africa 5134

Northwest Africa

Find: 2005

Achondrite (eucrite)

History: Two stones weighing 61.6 g in total were bought in 2004 in a Saharawi village near Tindouf, Algeria, by the astronomer Mario Di Martino.

Physical characteristics: The main mass, weighing 51.4 g, has a small portion of a black fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, MSP) A polymict breccia consisting of mineral clasts set into a fine-grained matrix of pigeonite, exsolved low-Ca pyroxene and plagioclase. The large clasts are predominantly plagioclase, pigeonite and exsolved low-Ca clinopyroxene. Minor phases include silica, ilmenite, and Al-Ti chromite. Exsolved pyroxene grains show alternating fine to very fine low-Ca pyroxene and augite lamellae (10 and 2 µm, respectively).

Geochemistry: Plagioclase (An_90.9), pigeonite (Fs_32.7-39.1Wo_6.3-7.2), augite (lamellae Fs_30.6Wo_10.5), low-Ca pyroxene (Fs_37.6Wo_1.8). Oxygen isotopes: (I. Franchi, R. Greenwood, OU) δ¹⁷O = 1.707, δ¹⁸O = 3.707, Δ¹⁷O = -0.221 (all ‰).

Classification: Achondrite (eucrite); moderate shock and minimal weathering.

Type specimens: A total of 15 g specimen and one thin section are on deposit at MSP. DMartino holds the main mass.

Submitted by: V. Moggi Cecchi, MSP.

Data from:
  MB93
  Table 2
  Line 208:

Place of purchase:	Tindouf, Algeria
Date:	2005
Mass (g):	61.6
Pieces:	2
Class:	Euc
Type spec mass (g):	15

Plots:

O isotopes:

Institutions
and collections

MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9927 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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