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Northwest Africa 15235 | |||||||||||||||||||||||||||||||
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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: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
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![]() |
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: |
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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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |