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| Northwest Africa 12933 | |||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 12933 This is an OFFICIAL meteorite name. Abbreviation: NWA 12933 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass:  370 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
| Comments: | Approved 23 Dec 2019 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 108:
Northwest Africa 12933 (NWA 12933) (Northwest Africa) Purchased: May 2017 Classification: HED achondrite (Eucrite) Petrography: The meteorite belongs to a breccia with a doleritic texture.The dominant mineral of the meteorite is plagioclase and pyroxene (up to 2.2 mm). Accessory ilmenite and troilite can be observed. Exsolution of the high calcium pyroxene from the low calcium proxene can be also observed. Geochemistry: Low-Ca pyroxene Fs59.5±1.4, Wo3.5±1.1, n=7, FeO/MnO=34.4±3.2, n=8; High-Ca pyroxene Fs26.2±2.2, Wo45.0±2.2, n=7; Plagioclase An88.8±3.3, n=9 (EDAX). | ||||||||||||||||||||||||
| Data from: MB108 Table 0 Line 0: |
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| Institutions and collections |
IGCAS: Institute of Geochemistry Chinese Academy of Sciences, Guiyang, China (institutional address; updated 27 Mar 2018) |
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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: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) | ||||||||||||||||||||||||