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Northwest Africa 13094
Basic information Name: Northwest Africa 13094
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13094
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 326 g
Recommended:  H5    [explanation]

This is 1 of 10308 approved meteorites (plus 45 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Jan 2020
Writeup from MB 109:

Northwest Africa 13094 (NWA 13094)


Purchased: 2014 Feb

Classification: Ordinary chondrite (H5)

History: Purchased from a Moroccan dealer in 2014

Physical characteristics: Complete fusion crust surrounds the meteorite exterior while a saw cut reveals some chondrules. Scattered flakes of troilite and metal were observed.

Petrography: Microprobe examination of an epoxy probe mount reveals many distinguishable chondrules ranging between 100-500 μm in size. Limited amount of plagioclase grains are present within the matrix, mostly between 10-50 μm in size. There is moderate oxidation of kamacite and troilite with about 30% oxidation of metal in total. Sample is cut by several iron-oxide weathering veins. Small disseminated metal in some areas suggests the meteorite to be very weakly shocked. The presence of small amounts of merrillite was observed.

Geochemistry: Olivine Fa18.7±0.2, Fe/Mn= 35.3±2.1, n=10; low-Ca pyroxene Fs16.5±0.2Wo0.99±0.11, Fe/ Mn=21.3±1.5, n=11; Kamacite Fe=92.0±1.0, Ni=6.7±0.1, Co=0.52±0.02 wt%, n=3.

Classification: Ordinary Chondrite (H5), Weathering grade W3.

Specimens: 41.6 g and an epoxy probe mount on deposit at UAz. Fredric Stephan holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014 Feb
Mass (g):326
Weathering grade:W3
Fayalite (mol%):18.7±0.2 (n=10)
Ferrosilite (mol%):16.5±0.2 (n=11)
Wollastonite (mol%):0.99±0.11 (n=11)
Classifier:M. Deci, T. Lewis, P. White, UAz
Type spec mass (g):41.6
Type spec location:UAz
Main mass:Fredric Stephan
Comments:Working name SH3; submitted by T. Swindle
   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)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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