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Northwest Africa 10406
Basic information Name: Northwest Africa 10406
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10406
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1270 g
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 272 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Dec 2015
Writeup from MB 104:

Northwest Africa 10406 (NWA 10406)

(Northwest Africa)

Purchased: 2015 Jul

Classification: HED achondrite (Eucrite, monomict)

History: Purportedly found in Mauritania and purchased by Darryl Pitt in July 2015 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed of eucrite clasts plus fine grained, related debris in an orange stained matrix. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, Ti-bearing chromite and troilite.

Geochemistry: Orthopyroxene host (Fs49.4Wo2.5, FeO/MnO = 25), clinopyroxene exsolution lamella (Fs21.5Wo41.1, FeO/MnO = 22), low-Ca pyroxene (Fs46.4Wo5.0, FeO/MnO = 26), clinopyroxene (Fs24.7Wo39.5, FeO/MnO = 28).

Classification: Eucrite (monomict breccia).

Specimens: 32 g including one polished thin section at UWB; main mass with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015 Jul
Mass (g):1270
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):49.4; 21.5
Wollastonite (mol%):2.5; 41.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):32
Type spec location:UWB
Main mass:DPitt
Comments:MAC 155; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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