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Northwest Africa 15202 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15202 This is an OFFICIAL meteorite name. Abbreviation: NWA 15202 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass: 27.5 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 15 approved meteorites classified as Eucrite-an. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 1 Oct 2022 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 15202 (NWA 15202) (Northwest Africa) Purchased: 2022 Mar Classification: HED achondrite (Eucrite, anomalous) History: Purchased by Aziz Zad in March 2022 from a dealer in Gaoua city, Mali. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Monomict breccia composed of angular lithic clasts and sparse, fine grained related crystalline debris. Clasts have subophitic texture and consist of exsolved pigeonite and calcic plagioclase with accessory silica polymorph, ilmenite, troilite, Ti-chromite and Ni-free Fe metal. Geochemistry: Low-Ca pyroxene (Fs65.9-68.5Wo1.8-4.5, FeO/MnO = 31-33, N = 4), augite (Fs30.9-31.4Wo43.2-43.6, FeO/MnO = 31-33, N = 4), plagioclase (An86.2-88.0Or0.5-0.3, N = 3). Classification: Eucrite (monomict breccia, anomalous). This specimen is anomalous because of the highly ferroan pyroxene compositions (with the Fs content of low-Ca pyroxene approaching 70 mole%), as also observed in some other eucrites such as NWA 11729, NWA 12445, and NWA 15076. Specimens: 25.2 g including one polished thin section at UWB; 300 g with WangZ; remainder with Mr. A. Zad. | ||||||||||||||||||||||||||||
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) WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021) |
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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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||
Crosslinks: |
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Revision history: |
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