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Northwest Africa 15339 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15339 This is an OFFICIAL meteorite name. Abbreviation: NWA 15339 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass: 9.76 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 60 approved meteorites classified as Diogenite-pm. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 4 Dec 2022 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 15339 (NWA 15339) (Northwest Africa) Purchased: 2022 Mar Classification: HED achondrite (Diogenite, polymict) History: Purchased by Craig Zlimen and Mark Lyon in March 2022 from an Algerian dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed predominantly of diogenitic orthopyroxene mineral clasts, some lithic diogenite clasts and minor (< 2 vol.%) lithic eucrite clasts (with fine-intergranular and gabbroic textures). Some but not all diogenitic orthopyroxene exhibits undulose extinction. Other minerals are exsolved pigeonite, calcic plagioclase, and accessory silica polymorph, medium-Ti chromite, ilmenite, troilite and kamacite. Some orthopyroxene in exsolved pigeonite exhibits reverse compositional zoning. Also present are some symplectitic intergrowths of augite with troilite and kamacite. Geochemistry: Diogenitic orthopyroxene (cores Fs22.8-23.4Wo1.9, FeO/MnO = 27-29, N = 2; rims Fs31.5-32.6Wo1.8-1.9, FeO/MnO = 29-31, N = 2; Fs29.7Wo1.6, FeO/MnO = 30), eucritic orthopyroxene hosts (Fs39.0-45.7Wo2.5-2.7, FeO/MnO = 24-29, N = 2), eucritic augite exsolution lamellae (Fs16.3-19.9Wo43.8-41.9, FeO/MnO = 21-23, N = 2), zoned eucritic orthopyroxene host (core Fs44.0Wo4.1, FeO/MnO = 31; rim Fs32.8Wo2.5, FeO/MnO = 33), augite in symplectite (Fs15.9Wo43.5, FeO/MnO = 19), augite (Fs13.3Wo45.7, FeO/MnO = 26), plagioclase (An78.9-88.4Or1.3-0.5, N = 4). Classification: Diogenite (polymict breccia). Specimens: 58 g including one polished thin section at UWB; remainder with Mr. C. Zlimen and Mr. M. Lyon. | ||||||||||||||||||||||||||||
Data from: MB111 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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Catalogs: |
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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: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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