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Northwest Africa 8655 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8655 This is an OFFICIAL meteorite name. Abbreviation: NWA 8655 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 5 approved meteorites classified as LL5-melt breccia. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||
Comments: | Approved 22 Feb 2015 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 8655 (NWA 8655) (Northwest Africa) Purchased: 2014 Oct Classification: LL5-melt breccia History: Purchased by Jason Phillips in Octber 2014 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Composed of recrystallized clasts containing sparse, relatively large (up to 2.8 mm) remnant chondrules within a dark, very fine-grained matrix. The very fine-grained matrix is black (almost opaque in thin section) and contains shred-like grains of metal and rounded troilite blebs (both indicative of melting). Shock stages were S2 for clasts, and S6 for matrix. Geochemistry: Olivine (Fa26.8-27.1, N = 3), orthopyroxene (Fs21.7-22.0Wo1.4-1.3, N = 3), clinopyroxene (Fs7.3-7.7Wo45.9-46.0). Analyses were done for both clasts and matrix. Classification: Ordinary chondrite (LL5 melt breccia). Specimens: 38 g including one polished thin section at UWB; main mass with J. Phillips. | ||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
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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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 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 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |