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Northwest Africa 2081 | |||||||||||||||||||||
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Basic information | Name: Northwest Africa 2081 This is an OFFICIAL meteorite name. Abbreviation: NWA 2081 Observed fall: No Year found: 2003 Country: (Northwest Africa) Mass: 114 g | ||||||||||||||||||||
Classification history: |
This is 1 of 522 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||
Writeup |
Writeup from MB online:
Northwest Africa 2081 Morocco Found 2003 Achondrite (diogenite) Two mostly complete stones (114 g) were purchased in Rissani, Morocco in 2003 October. Description and classification (T. Bunch and J. Wittke, NAU): monomict breccia composed of partially recrystallized orthopyroxene clasts set in a fine to medium grained matrix of crushed orthopyroxene. Mineral modes (vol%): orthopyroxene, 95; olivine, 4; chromite, 1; metal and sulfide, <1. Orthopyroxene commonly exhibits fine deformation lamellae that are parallel to the [001] zone axis. Orthopyroxene, Fs23.3Wo2.1; olivine, Fa6.9; chromite, Mg# = 22, Cr# = 86. Shock level, S2/3; very low weathering grade (no oxidation of metal and no staining). Specimens: 22.2 g plus one thin section, NAU; main mass, MFarmer. | ||||||||||||||||||||
Data from: MB89 Table 7 Line 80: |
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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) MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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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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