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Northwest Africa 11347
Basic information Name: Northwest Africa 11347
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11347
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 599 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 269 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 19 Jun 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11347 (NWA 11347)

(Northwest Africa)

Purchased: 2017

Classification: Ordinary chondrite (LL3)

History: Purchased by Morten Bilet from a meteorite dealer in Quarzazate, Morocco, April 2017.

Physical characteristics: Single stone, brown exterior, no fusion crust. Saw cut shows many densely packed chondrules set in a brown matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules, most with mesostasis or glass, opaque matrix. Apparent mean chondrule diameter 660±280 μm, n=16.

Geochemistry: (C. Agee and B. Ha, UNM) All olivine Fa10.9±9.3, Cr2O3=0.11±0.06 (wt%), n=12; Ferroan olivine Fa15.7±7.4, Cr2O3=0.08±0.08 (wt%), n=8; low-Ca pyroxene Fs9.6±6.0Wo0.7±0.7, n=6.

Classification: Ordinary chondrite (LL3), estimated subtype ~3.2-3.3 based on mean values of Fa and Fs and 1-sigma standard deviation, and on the ferroan olivine mean value of Cr2O3 and 1-sigma standard deviation (Grossman and Brearley, 2005).

Specimens: 20.6 g including a probe mount on deposit at UNM, Morten Bilet holds the main mass.

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017
Mass (g):599
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):10.9±9.3
Ferrosilite (mol%):9.6±6.0
Wollastonite (mol%):0.7±0.7
Classifier:C. Agee, UNM
Type spec mass (g):20.6
Type spec location:UNM
Main mass:Morten Bilet
Comments:MB-7; submitted by C. Agee
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. 106, in preparation (2017)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5838 approved meteorites from (Northwest Africa) (plus 2066 unapproved names)

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