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Northwest Africa 10045 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10045 This is an OFFICIAL meteorite name. Abbreviation: NWA 10045 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: 74.8 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 7 Apr 2015 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 10045 (NWA 10045) (Northwest Africa) Purchased: January 2015 Classification: HED achondrite (Howardite) History: Purchased in New York City from a Moroccan dealer. Physical characteristics: One piece. A sawn surface shows many fragmental clasts, some up to 3 mm, set in a light-gray groundmass. There are many sulfide and metal grains throughout the groundmass. Petrography: (C. Agee, UNM) This howardite consists of three lithologies, one is an equilibrated basaltic eucrite with exsolution pyroxenes (~50%), the second is a unequilibrated basaltic eucrite with zoned pyroxenes (~20%), and the third is an olivine-bearing diogenite (~30%). This is a breccia with single-crystal fragments as well as lithic fragments set in a fine-grained cataclastic groundmass. Accessory phases include kamacite, Fe-metal with trace amounts of nickel, oxidized iron, ilmenite, troilite, chromite, and silica. Geochemistry: (C. Agee and N. Muttik, UNM) Equilibrated eucrite low-Ca pyroxene Fs56.4±2.0Wo6.2±0.9, Fe/Mn=31±1, n=3; equilbrated eucrite augite/pigeonite Fs35.9±10.8Wo32.3±11.4, Fe/Mn=32±4, n=4; unequilibrated eucrite low-Ca pyroxene Fs40.8±6.1Wo3.7±1.9, Fe/Mn=29±2, n=3; diogenite low-Ca pyroxene Fs26.0±3.0Wo2.9±1.1, Fe/Mn=30±1, n=5; diogenite olivine Fa36.7±2.4, Fe/Mn=53±1, n=9; plagioclase An93.0±1.6, n=3. Classification: Howardite Specimens: 15.3 g including a probe mount on deposit at UNM, DPitt holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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