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Northwest Africa 14945
Basic information Name: Northwest Africa 14945
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14945
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 93.4 g
Recommended:  L6    [explanation]

This is 1 of 12189 approved meteorites (plus 7 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 13 May 2022
Writeup from MB 111:

Northwest Africa 14945 (NWA 14945)


Purchased: 2015

Classification: Ordinary chondrite (L6)

History: Sample was purchased in 2015 from A. Aaronson at the Tucson mineral show who acquired it from Morocco. Sample is catalogued at ROM as M60279.

Physical characteristics: Irregular, brown individual stone with minimal remnant fusion crust, dull desert polished broken surfaces and throughgoing cracks. Meteorite appears weathered to a rusty orange appearance. Physical properties: Magnetic susceptibility measured for a 18.84 g endpiece specimen is log χ (× 10-9 m3/kg) = 4.28.

Petrography: Cut faces (9 cm2) reveal a dark oragnge weathered interior matrix with disseminated metal grains, typically surrounded by Fe oxide haloes. Some dark chondrules are discernable. In polished thin section, chondrules are barely delineated within a recrystallized matrix. Grain boundaries between silicate and metal, sulfide grains are simplified. Olivine and pyroxene show undulatory extinction and some planar fractures. Metal grains up to 400 ┬Ám size typically have Fe oxide rims, and sulfide grains are extensively replaced by Fe oxides.

Classification: Ordinary chondrite: L6 (S3) W3. Magnetic susceptibility is consistent with weathered L chondrite.

Specimens: Type specimen location: ROM. Main mass: Gregory.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson, AZ, USA
Date:P 2015
Mass (g):93.4
Shock stage:S3
Weathering grade:W3
Magnetic suscept.:4.28
Classifier:P. McCausland, ROM, UWO
Type spec mass (g):25.71
Type spec location:ROM
Main mass:Dgregory
Comments:Submitted by V. Di Cecco, ROM
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 1902 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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