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Northwest Africa 11782
Basic information Name: Northwest Africa 11782
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11782
Observed fall: No
Year found: 2018
Country: Mali
Mass:help 25.7 kg
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 677 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 25 Apr 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11782 (NWA 11782)

Mali

Purchased: 2018

Classification: Ordinary chondrite (L3)

History: Purchased by Abdelhadi Aithiba in Mali.

Physical characteristics: Broken surface reveals numerous, distinct, closely packed chondrules. A single large sulfide grain ~5 mm was also observed.

Petrography: (C. Agee, UNM) microprobe examination of a polished mount of this lithology shows numerous porphyritic chondrules, most with mesostasis or glass. Cl-rich apatite detected.

Geochemistry: (C. Agee, UNM) Olivine Fa24.7±5.5, Cr2O3=0.10±0.21 (wt%), n=21; low-Ca pyroxene Fs19.8±5.6Wo1.2±0.7, n=11.

Classification: Ordinary chondrite (L3), subtype approximately L3.7 based on Fa and Fa s.d.

Specimens: 39.4g including a probe mount on deposit at UNM, Abdelhadi Aithiba holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Mali
Date:P 2018
Mass (g):25700
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.7±5.5
Ferrosilite (mol%):19.8±5.6
Wollastonite (mol%):1.2±0.7
Classifier:C. Agee, UNM
Type spec mass (g):39.4
Type spec location:UNM
Main mass:Abdelhadi Aithiba
Comments:Field name AB-220; 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. 107, in preparation (2018)
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Geography:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 35 approved meteorites from Mali (plus 1 unapproved name)

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