Meteoritical Bulletin: Entry for Northwest Africa 13485

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Northwest Africa 13485

Basic information

Name: Northwest Africa 13485
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13485
Observed fall: No
Year found: 2019
Country: Algeria
Mass: 1675 g

Classification
history:

Recommended:

Eucrite-unbr [explanation]

This is 1 of 104 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13485 (NWA 13485)

Algeria

Find: 2019

Classification: HED achondrite (Eucrite, unbrecciated)

History: Found in Algeria close to Ouargla

Physical characteristics: Partially crusted stones (the largest one 545 g). Interior is fine-grained and gray, with visible plagioclase crystals.

Petrography: (J. Gattacecca, CEREGE) Fractured but unbrecciated igneous rock with subophitic texture. Main minerals are zoned pyroxene (with µm scale rim enriched in iron) and plagioclase.

Geochemistry: Pyroxene: low-Ca pyroxene Fs_41.1±8.4Wo_6.9±1.5(n=5), Ca-pyroxene Fs_47.3Wo_21.2, Fs_61.0Wo_31.4, overall pyroxene FeO/MnO 29.9±3.0 (n=7). Plagioclase An_91.0Ab_8.7Or_0.3(n=2).

Classification: Achondrite (eucrite-unbr)

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

Data from:
  MB109
  Table 0
  Line 0:

Date:	2019
Mass (g):	1675
Pieces:	several
Class:	Eucrite-unbr
Magnetic suscept.:	2.72
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	23
Type spec location:	CEREGE
Main mass:	J. Bassemon
Comments:	work name CM57; 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 1088 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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