|
Northwest Africa 10175 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 10175 This is an OFFICIAL meteorite name. Abbreviation: NWA 10175 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: 823 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||||||||||
Comments: | Approved 3 Oct 2015 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 10175 (NWA 10175) (Northwest Africa) Purchased: 2015 Feb Classification: HED achondrite (Howardite) History: Purchased by Darryl Pitt in February 2015 from a dealer in Mauritania. Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia composed mainly of angular mineral clasts plus a variety of lithic clasts (basaltic eucrite, eucritic breccia) set in a finer grained matrix. Minerals comprise compositionally zoned, diogenitic orthopyroxene (~15 vol.%), exsolved pigeonite, calcic plagioclase, silica polymorph, Ti-poor chromite, ilmenite, zircon, troilite and altered Ni-free metal. Geochemistry: Orthopyroxene 1 (Fs18.1Wo1.1, FeO/MnO = 31), zoned orthopyroxene 2 (core Fs24.8Wo2.2, rim Fs45.8Wo2.0, FeO/MnO = 31-33), orthopyroxene host 1 (Fs55.6Wo2.67, FeO/MnO = 27), clinopyroxene exsolution lamella 1 (Fs25.8Wo41.0, FeO/MnO = 25), orthopyroxene host 2 (Fs49.7Wo2.4, FeO/MnO = 32), clinopyroxene exsolution lamella 2 (Fs21.6Wo43.3, FeO/MnO = 32). Classification: Howardite based on the presence of ~15 vol% of diogenitic orthopyroxene. Specimens: 20.3 g including one polished thin section at UWB. The remainder is held by DPitt. | ||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
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) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
| ||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|