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Northwest Africa 2758 | |||||||||||||||||
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Basic information | Name: Northwest Africa 2758 This is an OFFICIAL meteorite name. Abbreviation: NWA 2758 Observed fall: No Year found: 2004 Country: Morocco Mass: 678 g | ||||||||||||||||
Classification history: |
This is 1 of 603 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||
Comments: | Approved 3 Feb 2006 | ||||||||||||||||
Writeup |
Writeup from MB 90:
Northwest Africa 2758 Morocco Find: 2004 Achondrite (eucrite, polymict breccia) History: Four partial stones weighing a total of 458 g were purchased in Erfoud, Morocco, in October 2004. Petrography and Geochemistry: (J. Wittke and T. Bunch, NAU) The sample contains an assortment of cumulate (maximum grain size = 1.8 mm), subophitic (maximum grain size = 0.2 mm), and shock-melted to crystallized basalts. Cumulate basalts: Pyroxenes (Fs49.3Wo2.8; Fs38.8Wo13.9; Fs48.5Wo21.2; FeO/MnO for all = 31–40), plagioclase (An87); chromite (Cr/(Cr+Al) = 0.77). Subophitic basalts: Pyroxenes (Fs39.1–45.6Wo8.7–15.8; FeO/MnO = 30–36), plagioclase (An89), chromite (Cr/(Cr+Al) = 0.87). Classification: Achondrite (eucrite, polymict breccia); low to high shock, minimal weathering. Specimens: A 46 g type specimen is on deposit at NAU. Olsen holds the main mass. | ||||||||||||||||
Data from: MB90 Table 2 Line 73: |
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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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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