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Northwest Africa 10898 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10898 This is an OFFICIAL meteorite name. Abbreviation: NWA 10898 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 7 approved meteorites classified as LL3.10. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 9 Feb 2020 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 10898 (NWA 10898) (Northwest Africa) Purchased: 2015 Classification: Ordinary chondrite (LL3.10) History: Purchased in 2015 by Brahim Tahiri in Morocco and sent to his partner Sean Tutorow for analysis. Physical characteristics: Weathered fusion-crusted exterior. Saw cuts reveal well defined, densely packed chondrules, up to 7 mm in diameter, most in the size range 0.5 to 2 mm. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules, most with glass or mesostasis. Abundant fine-grained, opaque matrix. Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa18.4±11, Fe/Mn=60±24, Cr2O3=0.27±0.16 (wt%), n=18; low-Ca pyroxene Fs11.0±9.1Wo1.7±1.0, Fe/Mn=13±9, n=11. Analyses of 43 ferroan olivine gives an average Cr2O3 content of 0.284±0.206 wt%. Classification: Ordinary chondrite (LL3.10) subtype 3.10 based on mean values of Fa and Fs and 1-sigma standard deviation, and on the ferroan olivine mean value of Cr2O3 and 1-sigma standard deviation, similar to NWA 3127 (LL3.10) (Grossman and Brearley, 2005), also similar to NWA 7029 (LL3.10). Specimens: 23.95 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass. | ||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB109 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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names) |