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Northwest Africa 12575
Basic information Name: Northwest Africa 12575
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12575
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 119 g
Classification
  history:
Recommended:  LL6    [explanation]

This is 1 of 2750 approved meteorites (plus 1 unapproved name) 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 12575 (NWA 12575)

(Northwest Africa)

Purchased: July 2016

Classification: Ordinary chondrite (LL6)

Petrography: Chondrules poorly defined. Feldspar grains mostly 30-90 μm.

Geochemistry: Oxygen isotopic composition measured by R. C. Greenwood (OU): δ17O = 4.029, δ18O = 5.479, Δ17O = 1.180 (all per mil).

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:North West Africa
Place of purchase:Morocco
Date:P July 2016
Mass (g):119
Pieces:1
Class:LL6
Weathering grade:W1
Fayalite (mol%):31.7±0.5 (N=50)
Ferrosilite (mol%):25.5±0.6 (N=34)
Wollastonite (mol%):3.6±0.7 (N=34)
Classifier:N.V. Almeida, NHM, and 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, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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