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Northwest Africa 8471
Basic information Name: Northwest Africa 8471
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8471
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 314 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CV3
Recommended:  CV3    [explanation]

This is 1 of 536 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
Writeuphelp
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:
Place of purchase:Morocco
Date:P 2014 Mar
Mass (g):314.0
Pieces:1
Class:CV3
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):4.0±2.6 (n=30)
Ferrosilite (mol%):2.2±1.7
Wollastonite (mol%):1.5±0.8 (n=12)
Classifier:A. Rubin, UCLA
Type spec mass (g):21
Type spec location:UCLA
Main mass:Aras Jonikas
Comments:AJ14-2; submitted by Aras Jonikas
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)
Catalogs:
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:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Denis gourgues   
Wang Ziyao   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1488 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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