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Northwest Africa 14667
Basic information Name: Northwest Africa 14667
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14667
Observed fall: No
Year found: 2008
Country: Morocco
Mass:help 253 g
Recommended:  LL6    [explanation]

This is 1 of 2891 approved meteorites (plus 2 unapproved names) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 Mar 2022
Writeup from MB 111:

Northwest Africa 14667 (NWA 14667)


Purchased: 2008

Classification: Ordinary chondrite (LL6)

History: Sample was purchased at the Tucson mineral show in 2008 from A. Aaronson, who acquired it from Morocco. Sample is catalogued at ROM as M58919.

Physical characteristics: Smooth, rounded, fist-sized individual, mostly covered in a dark fusion crust with minor grey broken surfaces. All surfaces have moderately developed desert polish. Physical properties: Magnetic susceptibilty of a 8.40 g specimen is log χ (× 10-9 m3/kg) = 3.05.

Petrography: A large 21 cm2 cut surface shows an orange-weathered interior with very minor disseminated metal content and some large (mm size) but indistinct condrules. In thin section, chondrules are barely discenable in a heavily recrystallized matrix. Olivine and pyroxene show undulatory extinction and some planar fractures. In reflected light, 20 µm metal grains are sparsely disseminated. Chromite subrounded grains are common, ranging up to 600 µm in size. Sulfide is rare, occuring as large spongy grains surrounded by Fe oxide alteration. Fe oxide is common in the meteorite, typically lining vugs.

Geochemistry: Powder XRD analysis indicates olivine to have a structural unit cell consistent with Fa30.6.

Classification: Ordinary chondrite LL6 (S2) W3. Low observed metal content, magnetic susceptibility log χ (× 10-9 m3/kg) = 3.05, and powder XRD olivine Fa30.6 are all consistent with LL chondrite. Sulfides largely replaced by Fe-oxides in vugs.

Specimens: Type specimen ROM; main mass DGregory

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson, USA
Date:P 2008
Mass (g):253.09
Shock stage:S2
Weathering grade:W3
Magnetic suscept.:3.05
Classifier:P. McCausland (ROM, UWO), V Di Cecco (ROM)
Type spec mass (g):25.21
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 1992 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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