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Northwest Africa 13489 | |||||||||||||||||||||||||||
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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: 253 g | ||||||||||||||||||||||||||
Classification history: |
This is 1 of 59 approved meteorites classified as Brachinite. [show all] Search for other: Brachinites, Primitive achondrites | ||||||||||||||||||||||||||
Comments: | Approved 14 Nov 2020 | ||||||||||||||||||||||||||
Writeup |
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: |
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Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) Kuntz: Fabien Kuntz, France; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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