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Northwest Africa 2627
Basic information Name: Northwest Africa 2627
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2627
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 68 g
Meteoritical Bulletin:  MB 89  (2005)  Acapulcoite
MetBase:  v. 7.1  (2006)  Acapulcoite
Recommended:  Acapulcoite    [explanation]

This is 1 of 87 approved meteorites classified as Acapulcoite.   [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites
Writeup from MB 89:

Northwest Africa 2627

Northwest Africa

Found 2004

Achondrite (acapulcoite)

A 68 g mostly crusted, partial stone was purchased in Erfoud in October 2004. Description and classification (T. Bunch and J. Wittke, NAU): recrystallized into polygonal and subhedral grains with the exception of large orthopyroxene grains (up to 3 mm) that poikilitically enclose olivine; heavily fractured, variable grain size, and heterogeneous distribution of phases.  Modal analyses (vol. %): orthopyroxene, 44; olivine, 41; FeS, 6; metal (and Fe-oxides), 5; plagioclase, 3 and minor merrillite, Ca-pyroxene and chromite. All silicates have very homogeneous compositions; olivine, Fa13.1 (FeO/MnO = 26); orthopyroxene, Fs12.2 Wo2.7 (FeO/MnO = 13.9); plagioclase, An21.9; metal, Ni = 6.7 wt. % Ni. Oxygen isotopes (D. Rumble, CIW): replicate analyses of acid-washed whole rock material by laser fluorination gave d17O = 1.82, 1.75, 1.47, 1.56‰; d18O = 4.93, 4.96, 4.51, 4.51‰; D17O = -0.781, -0.865, -0.908, -0.821‰. Weathering grade is W2/3 with ferric Fe staining; shock level is low to moderate. Specimens: type specimen, 13.7 g, NAU: main mass, Strope/MFarmer

Data from:
  Table 7
  Line 345:
Mass (g):68
Classifier:Ted Bunch, NAU
Type spec mass (g):13.7
Type spec location:NAU
Plots: O isotopes:  
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Strope: 421 Fourth Street, Glen Dale, WV 26038, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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     This is 1 of 8509 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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