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Northwest Africa 14751
Basic information Name: Northwest Africa 14751
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14751
Observed fall: No
Year found: 1998
Country: Morocco
Mass:help 2.06 kg
Recommended:  H4    [explanation]

This is 1 of 6388 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 Mar 2022
Writeup from MB 111:

Northwest Africa 14751 (NWA 14751)


Purchased: 1998

Classification: Ordinary chondrite (H4)

History: Sample was purchased in 1998 from Adam Aaronson at the Tucson mineral show who acquired it from Morocco. Sample is catalogued at ROM as M60247.

Physical characteristics: A large, saucer-shaped individual with 85% fusion crust in two major surfaces, one smooth and domal, the other regmalypted, meeting at broken surfaces around the edge between the two main sides. All surfaces show moderate desert polish. Physical properties: Magnetic susceptibility measured for the 21.08 g type specimen is log χ (× 10-9 m3/kg) = 5.06.

Petrography: Cut faces (17 cm2) show abundant metal grains up to 1 mm size in a chondrule-rich stone. In thin section, chondrules of PO, POP, BO and RP types are moderately delineated in a recystallized, fragmental matrix. Chondrule mesostases are typically dark and microcrystalline. Metal occurs in chondrules and as isolated grains with local minor Fe oxide alteration. Olivine and pyroxene grains typically show undulatory extinction with some grains mosaicized.

Classification: Ordinary chondrite: H4 (S3) W1. Magnetic susceptibility is consistent with lightly weathered H chondrite.

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

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson, AZ, USA
Date:P 1998
Mass (g):2056
Shock stage:S3
Weathering grade:W1
Magnetic suscept.:5.06
Classifier:P. McCausland, ROM, UWO
Type spec mass (g):21.08
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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