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Northwest Africa 13097
Basic information Name: Northwest Africa 13097
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13097
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 162.9 g
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 11582 approved meteorites (plus 10 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 18 Jan 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13097 (NWA 13097)

Morocco

Purchased: 2014 Feb

Classification: Ordinary chondrite (L6)

History: Purchased from a Moroccan dealer in 2014

Physical characteristics: Single rough stone, completely covered with fusion crust. Saw cut reveals sparse amount of metal and sulfide flakes

Petrography: Microprobe examination of a polished mount shows a few indistinct chondrules present, set in a highly recrystallized matrix. Plagioclase grains range up to 200 μm in size. Kamacite, taenite, and troilite are not abundant, and are highly oxidized. Sample is cut by several terrestrial iron-oxide veins. Minor chromite is also present.

Geochemistry: Olivine Fa24.9±0.3, Fe/Mn= 46.8±2.6 n=10; low-Ca pyroxene Fs20.9±0.5Wo= 1.6±0.3, Fe/Mn= 27.7±1.3 n=10; Taenite Fe= 70.4±1.8, Ni= 28.2±1.7, Co=0.27±0.09 wt%, n=10.

Classification: Ordinary Chondrite (L6), weathering grade (W3)

Specimens: 20.8 g and an epoxy probe mount on deposit at UAz. Fredric Stephan holds the main mass.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014 Feb
Mass (g):162.9
Pieces:1
Class:L6
Weathering grade:W3
Fayalite (mol%):24.9±0.3
Ferrosilite (mol%):20.9±0.5
Wollastonite (mol%):1.6±0.3
Classifier:A.M. Azman, M.J. Samsudin and F. Shaharuddin, UAz
Type spec mass (g):20.8
Type spec location:UAz
Main mass:Fredric Stephan
Comments:Working name SH12; submitted by T. Swindle
Institutions
   and collections
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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