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Northwest Africa 15246
Basic information Name: Northwest Africa 15246
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15246
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 66.2 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 12920 approved meteorites (plus 11 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 5 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15246 (NWA 15246)

(Northwest Africa)

Purchased: 26 Apr 2013

Classification: Ordinary chondrite (L6)

History: A 19.9 g piece of the meteorite was sent to Cascadia by John Shea, who purchased the sample on April 26, 2013 from Gary Fujihara of Big Kahuna Meteorites, who in turn purchased the sample on February 25, 2013 from Youssef Ait El Caid, Zagora, Morocco as part of a 3.2kg lot of unclassified meteorites.

Physical characteristics: Physical Characteristics: The exterior of the stone is covered by a dark brown weathered fusion crust. Cut faces are a light-to-medium brown with cream-colored areas indicative of poorly-defined chondrules and inclusions. A black vein cuts across the sample, and metal and sulfide grains are visible.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): The sample is coarse-grained in thin section, with only a few readily distinguished chondrules. Along one edge of the section is an igneously-textured inclusion in the form of a segment of a circle with the edge of the segment along the edge of the section; the circle edge is 6.8 mm long. Two black veins cut the section. The veins contain numerous clasts of several phases, including majorite and ringwoodite, set amidst a sulfide-rich matrix. Coarse maskelynite is present in the meostases of both the large inclusion and a few of the larger chondrules.

Geochemistry: Olivine: Fa24.9±0.4, N=22; low-Ca pyroxene: Fs21.0±0.4Wo1.4±0.3, N=12.

Classification: Ordinary chondrite (L6) based on mineral chemistry and texture.

Specimens: Cascadia holds 18.1 g in one piece, as well as a polished thin section; JShea holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:online
Date:P 26 Apr 2013
Mass (g):66.17
Pieces:1
Class:L6
Shock stage:S5
Weathering grade:W1
Fayalite (mol%):24.9±0.4 (N=22)
Ferrosilite (mol%):21.0±0.4 (N=12)
Wollastonite (mol%):1.4±0.3 (N=12)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):19.9
Type spec location:Cascadia
Main mass:JShea (John A. Shea, Wallingford PA, https://bigjohnmeteorites.com/)
Comments:Lab number CML 0753; submitted by Melinda Hutson
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9790 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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