| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 12934 | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 12934 This is an OFFICIAL meteorite name. Abbreviation: NWA 12934 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass:  563 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 35 approved meteorites classified as Angrite. [show all] Search for other: Achondrites, Angrites | ||||||||||||||||||||||||||
| Comments: | Approved 23 Dec 2019 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 108:
Northwest Africa 12934 (NWA 12934) (Northwest Africa) Purchased: Oct 2018 Classification: Angrite Petrography: The meteorite mainly consists of irregular plagioclase (28 vol%, grain size 0.24 mm), olivine (31 vol%, grain size 0.96 mm) and pyroxene (41vol%, grain size 0.54 mm) and show a diabasic texture. Accessory troilite and ilmenite can be observed. Geochemistry: Olivine Fa40.1-42.7, CaO content is 1.09 wt% , FeO/MnO=73.4-98.7, N=18; Pyroxene Fs7.7-11.7, Wo52.8-56.4, Al2O3 content is 7.08 wt%; TiO2 content is 1.34 wt%, FeO/MnO=55.1-193.2, N=8; Plagioclase An99.2-99.8 (EPMA). | ||||||||||||||||||||||||||
| Data from: MB108 Table 0 Line 0: |
|
||||||||||||||||||||||||||
| Institutions and collections |
IGCAS: Institute of Geochemistry Chinese Academy of Sciences, Guiyang, China (institutional address; updated 27 Mar 2018) |
||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
| ||||||||||||||||||||||||||
| Geography: |
Statistics: This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names) | ||||||||||||||||||||||||||