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Northwest Africa 2061
Basic information Name: Northwest Africa 2061
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2061
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 135 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Eucrite
MetBase:  v. 7.1  (2006)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 471 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from MB 88:

Northwest Africa 2061

Morocco

Found 2003

Achondrite (eucrite)

A 135 g very fresh and fully crusted complete stone was purchased in Erfoud, July 2003. Classification and mineralogy (T. Bunch and J. Wittke, NAU): unbrecciated, porphyritic basalt with long (up to 9 mm) phenocrysts of low-Ca pyroxenes set in a matrix of smaller pyroxenes and blocky to acicular plagioclase. Clots (3 to 8 mm in dia.) of low-Ca pyroxene phenocrysts set in radiating bundles of plagioclase (variolitic texture) are distributed throughout the specimen. Main mass, low-Ca pyroxene phenocrysts are zoned from cores of Fs29.8Wo4.9 to pigeonite rims of Fs49Wo12; Fe/Mn = 29.8 and 37.2, respectively. Small inclusions of metal (Ni =0.05 to 0.25 wt %) are sparsely distributed. Blocky to acicular plagioclase is An83.7Or2 with a small compositional range. All plagioclase, regardless of size and morphology, contains FeO up to 0.97 wt. %. Clot pyroxene cores are Fs42.9Wo28 (Fe/Mn = 35.6) and rims are Fs49.2Wo25.1 (Fe/Mn = 36.1). Very fresh with no apparent weathering; shock level, low shock. Specimens: type sample, 21.7 g, NAU; main mass, Boswell.

Data from:
  MB88
  Table 4
  Line 149:
Date:2003
Mass (g):135
Pieces:1
Class:Euc
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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