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Northwest Africa 11506
Basic information Name: Northwest Africa 11506
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11506
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 63.3 g
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 199 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 6 Dec 2017
Writeup from MB 106:

Northwest Africa 11506 (NWA 11506)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased by Fabien Kuntz in April 2017 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting mainly of eucritic debris plus some subophitic eucrite clasts exhibiting variable grainsize. Minerals are exsolved pigeonite, calcic plagioclase, subcalcic augite, silica polymorph, ilmenite, troilite, merrillite, minor calcite and rare zircon.

Geochemistry: Orthopyroxene host (Fs61.9-63.0Wo1.9-1.6, FeO/MnO = 33-35, N = 2), clinopyroxene exsolution lamellae (Fs28.0-31.4Wo42.3-38.9, FeO/MnO = 34-36, N = 2), subcalcic augite (Fs37.2Wo23.3, FeO/MnO = 33), plagioclase (An83.5-85.1Or0.6, N = 2).

Classification: Eucrite (breccia).

Specimens: 12.79 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Apr
Mass (g):63.3
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):61.9-63.0
Wollastonite (mol%):1.9-1.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):12.79
Type spec location:PSF
Main mass:F. Kuntz
Comments:Work name K367; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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