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| Northwest Africa 8471 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 8471 This is an OFFICIAL meteorite name. Abbreviation: NWA 8471 Observed fall: No Year found: 2014 Country: Morocco Mass:  314 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 589 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 10 Jul 2014 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 103:
Northwest Africa 8471 (NWA 8471) Morocco Purchased: 2014 Mar Classification: Carbonaceous chondrite (CV3) History: Purchased from a dealer in Morocco in March of 2014 by A. Jonikas Physical characteristics: One stone lacking fusion crust, cut surface reveals closely packed chondrules and CAIs in a dark gray matrix Petrography: (A. Rubin, UCLA) Microprobe examination of a polished mount shows the rock is an oxidized CV3; it contains abundant magnetite and has little metallic Fe-Ni. It has a preferred orientation petrofabric, suggesting it may be a member of the Bali subgroup. Chondrules are large, averaging 900 μm in diameter. Textural types of chondrules include Type-I porphyritic olivine and olivine-pyroxene and barred olivine. Type-II chondrules are rare. No radial pyroxene chondrules were observed in the thin section. Many of the chondrules are surrounded by igneous rims. The rock contains 5-10 vol.% amoeboid olivine inclusions ranging in length from 0.8 to 5 mm. Geochemistry: Olivine Fa4.0±2.6 (Fa0.5-10.0, n=30); Low-Ca pyroxene Fs2.2±1.7Wo1.5±0.8 (Fs0.9-4.7, n=12). Classification: Carbonaceous chondrite (CV3) Specimens: 21 g type specimen including a probe mount, UCLA; A. Jonikas hold the main mass | ||||||||||||||||||||||||||||||
| Data from: MB103 Table 0 Line 0: |
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| Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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| References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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| Photos: |
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Geography:
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Statistics: This is 1 of 1847 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||