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Northwest Africa 12576
Basic information Name: Northwest Africa 12576
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12576
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 266 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2858 approved meteorites (plus 2 unapproved names) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Apr 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12576 (NWA 12576)

(Northwest Africa)

Purchased: November 2016

Classification: Ordinary chondrite (LL6)

Petrography: Chondrules poorly defined. Feldspar grains mostly 30-100 µm.

Geochemistry: Oxygen isotopic composition measured by R. Greenwood (OU): δ17O = 4.275, δ18O = 6.039, Δ17O = 1.135 (all per mil).

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:North West Africa
Place of purchase:Morocco
Date:P November 2016
Mass (g):266
Pieces:1
Class:LL6
Weathering grade:W3
Fayalite (mol%):31.7±0.3 (N=37)
Ferrosilite (mol%):25.7±0.5 (N=51)
Wollastonite (mol%):1.6±0.3 (N=51)
Classifier:E. Bonato, N.V. Almeida, NHM; R.C. Greenwood, OU
Type spec mass (g):20
Type spec location:NHM
Main mass:Jasper Spencer
Comments:Submitted by N. V. Almeida
Plots: O isotopes:  
Institutions
   and collections
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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