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Northwest Africa 13489
Basic information Name: Northwest Africa 13489
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13489
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 253 g
Classification
  history:
Recommended:  Brachinite    [explanation]

This is 1 of 53 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Comments: Approved 14 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13489 (NWA 13489)

(Northwest Africa)

Purchased: 2019 May

Classification: Primitive achondrite (Brachinite)

Physical characteristics: Multiple fragments, some with fusion crust

Petrography: (J. Gattacceca, CEREGE) Granulitic texture. Main minerals are olivine (dominant, grain size 300 µm), Ca- pyroxene (typical size 200 µm), plagioclase (typical size 300 µm). Other minerals: troilite (to 300 µm), chromite (to 100 µm, with lobate contacts in plagioclase), rare metal as µm-sized grains within silicates. No low-Ca pyroxene was observed.

Geochemistry: Olivine Fa32.5±0.2, FeO/MnO=74.4±8.7 (n=7). Ca-pyroxene Fs11.3±0.3Wo44.0±0.2, FeO/MnO=44.6±7.2 (n=7). Plagioclase An34.9Ab62.2Or2.9 (n=4). Chromite Cr# 0.74 (n=2).

Classification: Achondrite (brachinite)

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2019 May
Mass (g):253
Pieces:many
Class:Brachinite
Weathering grade:high
Fayalite (mol%):32.5±0.2 (n=7)
Magnetic suscept.:3.42
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20.23
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K427; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7552 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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