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Northwest Africa 2682 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 2682 This is an OFFICIAL meteorite name. Abbreviation: NWA 2682 Observed fall: No Year found: 2004 Country: (Northwest Africa) Mass: 636 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 62 approved meteorites classified as L3-6. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 2 Aug 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 2682 (NWA 2682) (Northwest Africa) Purchased: 2004 Classification: Ordinary chondrite (L3-6) History: Purchased by Nelson Oakes in 2004 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS; T. Bunch and J. Wittke, NAU; P. Carpenter, WUSL) Closely-packed, well-formed chondrules (apparent diameter 820±300 µm, N = 20) plus some angular clasts (Type 6, equilibrated with rare remnant chondrules) are set in a finer grained matrix containing stained metal. Geochemistry: Olivine (Fa27.9±9.3, range Fa8.7-36.9, N = 8; Cr2O3 in ferroan examples 0.05-0.69 wt.%, mean 0.21±0.25 wt.%, N = 7), orthopyroxene (Fs10.1±10.3Wo0.7±0.5, range Fs3.4-21.9Wo0.4-1.2, N = 3), clinopyroxene (Fs10.7Wo37.5; Fs7.9Wo46.3; N = 2), olivine in Type 6 lithic clast (Fa26.1±0.1, range Fa26.0-26.2, N = 2). Classification: Ordinary chondrite (L3-6). Affinity to L chondrites is established from olivine composition in equilibrated lithic clasts. Specimens: 47.4 g including one polished thin section at PSF; remainder with Mr. N. Oakes. | ||||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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Institutions and collections |
NAU: Geology, Bldg 12
Knoles Dr
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) Oakes: Nelson Oakes, Route 1, House 50C, Uniondale, PA 18470, United States; Website (private address) |
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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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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