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Northwest Africa 14752
Basic information Name: Northwest Africa 14752
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14752
Observed fall: No
Year found: 2001
Country: Morocco
Mass:help 2.45 kg
Recommended:  LL4-6    [explanation]

This is 1 of 78 approved meteorites classified as LL4-6.   [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 14752 (NWA 14752)


Purchased: 2001

Classification: Ordinary chondrite (LL4-6)

History: Sample was purchased in 2001 from Adam Aaronson at the Tucson mineral show who acquired it from Morocco. Sample is catalogued at ROM as M60248.

Physical characteristics: A brick sized individual mostly covered in fusion crust, with regmalypted surfaces. Broken surfaces and fusion crust shows mature desert polish and dun brown weathering. Physical properties: Magnetic susceptibility measured for the 21.41 g type specimen is log χ (× 10-9 m3/kg) = 3.99.

Petrography: Cut face (8 cm2) reveals a dun brown-weathered breccia containing dark angular clasts up to 1.5 cm in size, constituting 20 vol% of stone. Metal is sparse, mainly outside of clasts. In polished thin section, chondrules are moderately delineated along with abundant chondrule fragments and individual grains in a fragmental groundmass. Clasts with sharp boundaries and fine grained rims are highly recystallized with barely discernable chondrules. Pyroxene and olivine grains in the groundmass, chondrules and clasts typically show undulatory extinction. Fe oxide staining is pervasive in groundmass but subdued in clasts.

Classification: Ordinary chondrite: LL 4-6 (S2) W2. Low metal content and magnetic susceptibility is consistent with a weathered LL chondrite. Stone is a fragmental breccia of LL4 chondritic materail bearing angular LL6 clasts.

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

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson, AZ, USA
Date:P 2001
Mass (g):2446
Shock stage:S2
Weathering grade:W2
Magnetic suscept.:3.99
Classifier:P. McCausland, ROM, UWO
Type spec mass (g):21.41
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 1903 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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