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Northwest Africa 8059 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8059 This is an OFFICIAL meteorite name. Abbreviation: NWA 8059 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 5 approved meteorites classified as LL3.05. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 18 Dec 2015 | ||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 8059 (NWA 8059) (Northwest Africa) Purchased: 2013 Sep Classification: Ordinary chondrite (LL3.05) History: Purchased by Gary Fujihara in September 2013 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, mostly medium-sized chondrules in a much finer grained matrix. Chondrules contain interstitial regions composed of glass plus very small, indeterminate quench-textured microlites. Geochemistry: Olivine (Fa0.4-39.4, N= 24; Cr2O3 in ferroan olivine = 0.13-0.69 wt.%, mean 0.43±0.14 wt.%, N = 22), orthopyroxene (Fs1.1-42.8Wo1.1-0.9, N = 3), pigeonite (Fs13.2Wo19.2), subcalcic augite (Fs10.4Wo27.9). Oxygen isotopes (K. Ziegler, UNM): analyses by laser fluorination of acid-washed subsamples gave, respectively δ17O 2.688, 2.228, 2.349, 2.915; δ18O 5.277, 4.702, 3.273, 4.361; Δ17O -0.098, -0.255, 0.621, 0.612 per mil (for a TFL slope of 0.528). Magnetic susceptibility is log χ =3.80 (χ in 10-9 m3/kg) Classification: Ordinary chondrite (LL3.05). Magnetic susceptibility indicates LL. Estimation of subtype based on Cr2O3 distribution in ferroan olivine per Fig. 15a of Grossman and Brearley (2005). Specimens: 11.0 g including one polished thin section at UWB. The remainder is held by G. Fujihara. | ||||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB104 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||||
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) 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) |
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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 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |