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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
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 13099 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 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:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Dec
Mass (g):658
Pieces:1
Class:L6
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
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. ?
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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