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Northwest Africa 10402 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10402 This is an OFFICIAL meteorite name. Abbreviation: NWA 10402 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 218 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 18 Dec 2015 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 10402 (NWA 10402) (Northwest Africa) Purchased: 2015 Jun Classification: HED achondrite (Eucrite, brecciated) History: Purchased by Aras Jonikas in June 2015 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed mostly of crystal debris plus some intact eucrite clasts (with intersertal and fine-grained, quench textures). Exsolved pigeonite in all components has the same optical properties; other minerals are calcic plagioclase, fayalite, silica polymorph, ilmenite and troilite, plus rare ferroan orthopyroxene, ferropigeonite and Ni-free metal. Geochemistry: Olivine (Fa77.2; Fa89.0; FeO/MnO = 43-44, N = 2), low-Ca pyroxene host (Fs57.8Wo6.7, FeO/MnO = 30), clinopyroxene exsolution lamella (Fs30.5Wo39.5, FeO/MnO = 31), discrete orthopyroxene (Fs39.0Wo3.1, FeO/MnO = 31), ferropigeonite (Fs77.1Wo15.8, FeO/MnO = 30). Classification: Eucrite (genomict breccia). Specimens: 9.9 g including one polished thin section at PSF; main mass with Mr. A. Jonikas. | ||||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |