Meteoritical Bulletin: Entry for Northwest Africa 13486

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Northwest Africa 13486

Basic information

Name: Northwest Africa 13486
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13486
Observed fall: No
Year found: 2019
Country: Algeria
Mass: 21 g

Classification
history:

Recommended:

Martian (shergottite) [explanation]

This is 1 of 293 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13486 (NWA 13486)

Algeria

Find: 2019

Classification: Martian meteorite (Shergottite)

Physical characteristics: Light grey relatively coarse crystalline rock.

Petrography: (J. Gattacceca, CEREGE) Igneous rock with doleritic texture. Main minerals are zoned pyroxene and maskelynite, with grain size ~500 μm. Other minerals: silica polymorph (100 μm), Fe-Ti oxides (100 μm).

Geochemistry: Pyroxene Fs_38.4±11.4Wo_19.1±7.3, FeO/MnO = 32.6±3.4 (n=6). Plagioclase An_61.3Ab_38.3Or_0.4(n=2).

Classification: Achondrite (shergottite).

Specimens: Type specimen at CEREGE. Main mass with J. Bassemon.

Data from:
  MB109
  Table 0
  Line 0:

Date:	2019
Mass (g):	21
Pieces:	10
Class:	Martian (shergottite)
Magnetic suscept.:	2.95
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	4.43
Type spec location:	CEREGE
Main mass:	J. Bassemon
Comments:	work name CM59; submitted by Jérôme Gattacceca

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)

Catalogs:

References:

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

Find references in NASA ADS:
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Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1277 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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