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| Northwest Africa 12731 | |||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 12731 This is an OFFICIAL meteorite name. Abbreviation: NWA 12731 Observed fall: No Year found: 2018 Country: Algeria Mass:  29 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 40 approved meteorites classified as R5. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7) | ||||||||||||||||||||||||
| Comments: | Approved 8 Jul 2019 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 108:
Northwest Africa 12731 (NWA 12731) Algeria Purchased: 2018 Oct Classification: Rumuruti chondrite (R5) History: Bought from Mohamed Elguirah in October 2018 Physical characteristics: Full stone covered by dull and fractured fusion crust Petrography: (J. Gattacceca, CEREGE) Chondrite with recrystallized texture and average plagioclase size below 50 µm. Olivine is the ultra dominant silicate. Abundant sulfides to 200 µm, including pentlandite and pyrrhotite. Geochemistry: Olivine Fa39.9±0.5, NiO=0.25±0.05 wt% (n=4). Plagioclase An7.5Ab86.5Or6.0 (n=2). Ca-pyroxene Fs 11.8Wo44.4 (n=1). Classification: Rumuruti chondrite (R5). Specimens: Type specimen at CEREGE. Main mass with Jean Redelsperger. | ||||||||||||||||||||||||
| Data from: MB108 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography:
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Statistics: This is 1 of 1294 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||