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Northwest Africa 14753
Basic information Name: Northwest Africa 14753
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14753
Observed fall: No
Year found: 2008
Country: Morocco
Mass:help 518 g
Classification
  history:
Recommended:  LL4    [explanation]

This is 1 of 387 approved meteorites classified as LL4.   [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
Writeuphelp
Writeup from MB 111:

Northwest Africa 14753 (NWA 14753)

Morocco

Purchased: 2008

Classification: Ordinary chondrite (LL4)

History: Sample was purchased in 2008 from Adam Aaronson at the Tucson mineral show who acquired it from Morocco. Sample is catalogued at ROM as M60250.

Physical characteristics: A fist-sized individual with some fusion crust but dominantly broken surfaces, all modified by mature desert polish and dun-brown weathering. Physical properties: Magnetic susceptibility measured for a 9.01 g weathered endpiece is log χ (× 10-9 m3/kg) = 4.01.

Petrography: Cut face (12 cm2) reveals a rusty weathered interior bearing minor metal and distinct chondrules. In polished thin section, numerous intact well delineated chondrules mainly of POP, PO types as well as amoeboid olivine aggregates are set in a finely recrystallized matrix. Olivine and pyroxene typically show undulatory extinction. Fe oxides pervasively stain the silicates. In reflected light, Fe oxide occurs mainly in matrix, cracks and surrounding sparse metal and sulfide grains.

Classification: Ordinary chondrite: LL4 (S2) W2. Magnetic susceptibility is consistent with a weathered LL chondrite.

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

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tucson, AZ, USA
Date:P 2008
Mass (g):518
Pieces:1
Class:LL4
Shock stage:S2
Weathering grade:W2
Magnetic suscept.:4.01
Classifier:P. McCausland, ROM, UWO
Type spec mass (g):20.06
Type spec location:ROM
Main mass:DGregory
Comments:Submitted by V. Di Cecco, ROM
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1902 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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