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Northwest Africa 8541
Basic information Name: Northwest Africa 8541
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8541
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 191.2 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  L6
Recommended:  L6    [explanation]

This is 1 of 12780 approved meteorites (plus 11 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 8541 (NWA 8541)

(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, partially fusion-crusted exterior, saw cut reveals faint chondrules and fine-grained metal/sulfide set in a gray groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows equilibrated chondrules and plagioclase grains up to 200 μm, FeNi metal and troilite throughout.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa25.2±0.3, Fe/Mn=51±2, n=7; low-Ca pyroxene Fs21.1±0.1Wo1.8±0.2, Fe/Mn=29±1, n=7; plagioclase Ab84.2±0.9An10.1±0.1Or5.7±0.8, n=3.

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

Specimens: 21.4 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):191.2
Pieces:1
Class:L6
Weathering grade:W1
Fayalite (mol%):25.2±0.3
Ferrosilite (mol%):21.1±0.1
Wollastonite (mol%):1.8±0.2
Classifier:C. Agee, UNM
Type spec mass (g):21.4
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G533; 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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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