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Northwest Africa 8143
Basic information Name: Northwest Africa 8143
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8143
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 310 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  LL3
Recommended:  LL3    [explanation]

This is 1 of 332 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 10 Dec 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 8143 (NWA 8143)

Morocco

Purchased: July 2013

Classification: Ordinary chondrite (LL3)

Petrography: (A. Rubin, UCLA) Chondrules are sharply defined, although they lack clear, transparent, colorless glassy mesostases. Much of the low-Ca pyroxene has polysynthetic twins and is thus low-Ca clinopyroxene. Olivine and low-Ca pyroxene are chemically heterogeneous. Chondrules have an average diameter of about 700 μm, indicating that the rock is LL and not H or L (which have much smaller chondrules).

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P July 2013
Mass (g):310
Pieces:1
Class:LL3
Shock stage:S3
Weathering grade:W5
Fayalite (mol%):13.8±7.3 (1.7-26.8, n=18)
Ferrosilite (mol%):10.6±5.4 ( 5.9-22.7, n=7)
Wollastonite (mol%):0.9±0.6 (n=7)
Classifier:A. Rubin, UCLA
Type spec mass (g):30.66
Type spec location:UCLA
Main mass:with owner: Aras Jonikas
Comments:Submitted by Alan Rubin
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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wang Ziyao      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1450 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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