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Northwest Africa 15235
Basic information Name: Northwest Africa 15235
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15235
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 658 g
Recommended:  L6    [explanation]

This is 1 of 12583 approved meteorites (plus 8 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
Writeup from MB 111:

Northwest Africa 15235 (NWA 15235)

(Northwest Africa)

Purchased: 2021 Dec

Classification: Ordinary chondrite (L6)

History: Cascadia received 55.0 g of material from Mustapha Oulkouch, who purchased the stone in December 2021, with the information that the stone had been found near the Tarda strewnfield in summer 2021.

Physical characteristics: Physical Characteristics: The exterior of the stone is covered by a dark brown weathering rind. Cut faces are a reddish-brown slightly lighter that the exterior, with visible flecks of reflective oxide minerals and red-brown fractures.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): In thin section, the sample is coarse-grained and well-integrated, with only a half dozen barely discernable chondrules present. There is 70-80% replacement of metal and sulfide. Among the phases analyzed are chlor-apatite grains partly or wholly replaced by a hydrous Fe-phosphate. Feldspathic material appears fluidized, and feldspathic-chromite assemblages are present. Small patches of solidified melt emulsion are observed adjacent to weathered opaque minerals.

Geochemistry: Olivine: Fa25.4±0.7, N=11; low-Ca pyroxene: Fs21.0±0.3Wo1.5±0.2, N=8.

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

Specimens: Cascadia holds 48.1 g in one piece, as well as a polished thin section and material in an epoxy butt; Mustapha Oulkouch holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Dec
Mass (g):658
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):25.4±0.7 (N=11)
Ferrosilite (mol%):21.0±0.3 (N=8)
Wollastonite (mol%):1.5±0.2 (N=8)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):55.0
Type spec location:Cascadia
Main mass:Mustapha Oulkouch
Comments:Lab number CML 1498; submitted by Melinda Hutson
   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)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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