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| Northwest Africa 2634 | |||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 2634 This is an OFFICIAL meteorite name. Abbreviation: NWA 2634 Observed fall: No Year found: 2004 Country: (Northwest Africa) Mass:  600 g | ||||||||||||||||||||||
| Classification history: |
This is 1 of 623 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||
| Writeup |
Writeup from MB online:
Northwest Africa 2634 Northwest Africa Purchased 2004 Achondrite (ureilite) A 600.2 g complete stone with fusion crust was purchased in Erfoud, Morocco. Description and classification (T. Bunch and J. Wittke, NAU): mosaicized-type ureilite; elongated olivine and pigeonite in preferred orientation; highly shocked with pyroxenes completely converted to mosaic texture, olivine less so; reduction level is R3. Olivine cores, Fa21.4, rims reduced to Fa3.8; pigeonite, Fs18.8Wo9.9; sub-calcic augite, Fs17 Wo16.6; vein metal, 0.3-3.7 wt. % Ni. Low weathering grade. Specimens: type specimen, 46 g, NAU; main mass, MFarmer. | ||||||||||||||||||||||
| Data from: MB89 Table 7 Line 347: |
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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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| References: | Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||