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Northwest Africa 2625 | |||||||||||||||||
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Basic information | Name: Northwest Africa 2625 This is an OFFICIAL meteorite name. Abbreviation: NWA 2625 Observed fall: No Year found: 2004 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||
Classification history: |
This is 1 of 643 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||
Writeup![]() |
Writeup from MB 89:
Northwest Africa 2625 Northwest Africa Purchased 2004 August Achondrite (ureilite) A 305 g single stone was purchased in Erfoud, Morocco. Description and classification (J. Wittke and T. Bunch, NAU): medium- to coarse-grained (<4 mm), typical ureilite with pronounced preferred orientation of silicates, which are mostly elongated with curvilinear morphology. Pigeonite shows well-defined twinning; graphite and carbonaceous-metal-silicate-masses tend to cross trend the lineation direction with some small masses poikilitically enclosed by large pigeonite. The degree of olivine–pigeonite reduction is low to moderate. Olivine cores, Fa20.3 (Cr2O3 = 0.72 wt. %), rims are Fa8-10.8 (Cr2O3 = 0.53 wt. %); pigeonite, Fs17.4Wo7.6 (Cr2O3 up to 1.56 wt. %). Weathering is low grade and the shock level is S2. Specimens: type specimen, 22.2 g, NAU; main mass, GHupé. | ||||||||||||||||
Data from: MB89 Table 7 Line 343: |
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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) GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, 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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Photos: |
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Geography: |
Statistics: This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |