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Northwest Africa 11495
Basic information Name: Northwest Africa 11495
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11495
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 91.4 g
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 356 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Nov 2017
Writeup from MB 106:

Northwest Africa 11495 (NWA 11495)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Eucrite, polymict)

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

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed mainly of eucritic debris with some lithic eucrite clasts exhibiting diverse textures (intersertal, vitrophyric, variolitic, diabasic) and rare diogenitic orthopyroxene and olivine. Other minerals are exsolved pigeonite, calcic plagioclase, unexsolved pigeonite, silica polymorph, ilmenite, chromite, Ni-poor metal, troilite and rare composite grains of kamacite+taenite.

Geochemistry: Orthopyroxene host (Fs50.5Wo1.6, FeO/MnO = 28), clinopyroxene exsolution lamella (Fs21.6Wo41.5, FeO/MnO =27), pigeonite (Fs41.7Wo21.3, FeO/MnO = 31), diogenitic orthopyroxene (Fs21.0Wo1.0, FeO/MnO = 44), olivine (Fa64.6-77.2, FeO/MnO = 47-51, N = 2), plagioclase (An86.2-86.3Or0.5, N = 2).

Classification: Eucrite (polymict breccia).

Specimens: 18.38 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):91.4
Shock stage:low
Weathering grade:low
Fayalite (mol%):64.6-77.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):18.38
Type spec location:PSF
Main mass:F. Kuntz
Comments:Work name K365; 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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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