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Northwest Africa 2758
Basic information Name: Northwest Africa 2758
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2758
Observed fall: No
Year found: 2004
Country: Morocco
Mass:help 678 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Eucrite-pmict
Recommended:  Eucrite    [explanation]

This is 1 of 459 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Feb 2006
Writeuphelp
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:
Place of purchase:Erfoud, Morocco
Date:2004
Mass (g):678
Pieces:4
Class:Euc
Shock stage:low-high
Weathering grade:minimal
Type spec mass (g):37.5
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Olsen: Unknown person (private address; updated 17 Apr 2009)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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