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Northwest Africa 13093
Basic information Name: Northwest Africa 13093
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13093
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 497 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 13093 (NWA 13093)

Morocco

Purchased: 2014 Feb

Classification: Ordinary chondrite (L6)

History: Purchased from a Moroccan dealer in 2014.

Physical characteristics: Physical Characteristics: Almost completely covered by black fusion crust. Interior shows moderate amount of metallic and sulfide flakes. Dark parallel bands run along the length of the interior.

Petrography: (S. Chapin and K. Kingsbury, UAz) Microprobe examination of a polished mount shows a few, barely distinguishable, partly recrystallized chondrules, some up to 500-900 μm in size. Plagioclase grains are large (70-200 μm). Minor oxidization seen along rims of kamacite and troillite. A few small shock veins several mm long are observed. Troilite, merrillite, and chromite are also present.

Geochemistry: Mineral compositions and geochemistry: (S. Chapin and K. Kingsbury, UAz) Olivine Fa25.4±1.2, n=10; low-Ca pyroxene Fs20.8±0.3Wo1.6±0.3, n=10; Kamacite Fe=91.93±0.94, Ni=6.23±0.23, Co=0.96±0.11 wt%, n=3.

Classification: Ordinary Chondrite (L6), weathering grade W2.

Specimens: 31 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):497.1
Pieces:1
Class:L6
Weathering grade:W2
Fayalite (mol%):25.4±1.2 n=10
Ferrosilite (mol%):20.8±0.3 n=10
Wollastonite (mol%):1.6±0.3 n=10
Classifier:S. Chapin, K. Kingsbury
Type spec mass (g):31
Type spec location:UAz
Main mass:Fredric Stephan
Comments:Working name SH2.; 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)
Find references in NASA ADS:
Find references in Google Scholar:
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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