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Northwest Africa 12444
Basic information Name: Northwest Africa 12444
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12444
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 115 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 316 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 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12444 (NWA 12444)

(Northwest Africa)

Purchased: 2018 Jul

Classification: Ordinary chondrite (LL3)

History: Purchased by Ben Hoefnagels in July 2018 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, well formed, relatively large chondrules (apparent diameter 790±420 µm, N = 14) are set in a fine grained metal-poor matrix.

Geochemistry: Olivine (Fa16.9±11.4 (range Fa0.7-95.6); Cr2O3 in ferroan examples 0.07-0.15 wt.%, mean 0.11±0.03 wt.%, N = 10), low-Ca pyroxene (Fs19.3±18.7Wo0.7±0.3 (range Fs2.0-39.1Wo0.4-0.8), N = 3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.95.

Classification: Ordinary chondrite (LL3).

Specimens: 27.6 g including one polished endcut at UWB; remainder with B. Hoefnagels.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018 Jul
Mass (g):115
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):16.9±11.4 (n=10)
Ferrosilite (mol%):19.3±18.7 (n=3)
Wollastonite (mol%):0.7±0.3
Magnetic suscept.:3.95
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):27.6
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH158; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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