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Northwest Africa 8544
Basic information Name: Northwest Africa 8544
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8544
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 1574 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  L6
Recommended:  L6    [explanation]

This is 1 of 11044 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Sep 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8544 (NWA 8544)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (L6)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, April 2013.

Physical characteristics: Single stone, irregular weathered exterior, saw cut reveals faint chondrules and fine-grained metal set in a light colored matrix with some small patches of iron-staining, also shock melt veins up to 1-cm wide.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a few indistinct chondrules, some plagioclase grains >50 μm, kamacite, taenite, troilite, Fe-oxide, merrillite, Cl-rich apatite.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa25.6±0.3, Fe/Mn=50±3, n=9; low-Ca pyroxene Fs21.6±0.3Wo1.7±0.2, Fe/Mn=29±1, n=8.

Classification: Ordinary chondrite (L6), weathering grade W1.

Specimens: 35.5 g including a probe mount on deposit at UNM, S. Tutorow holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):1574.2
Pieces:1
Class:L6
Shock stage:S6
Weathering grade:W1
Fayalite (mol%):25.6±0.3
Ferrosilite (mol%):21.6±0.3
Wollastonite (mol%):1.7±0.2
Classifier:C. Agee, UNM
Type spec mass (g):35.5
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G589; submitted by C. Agee, UNM
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
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)
Michael S. Scherman   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7101 approved meteorites from (Northwest Africa) (plus 2004 unapproved names)

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