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Northwest Africa 10146
Basic information Name: Northwest Africa 10146
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10146
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 43.5 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 344 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 11 Jun 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10146 (NWA 10146)

(Northwest Africa)

Purchased: 2015 Jan

Classification: HED achondrite (Eucrite, polymict)

History: Purchased by Darryl Pitt in January 2015 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia composed predominantly of mineral clasts plus some lithic clasts with diabasic to fine intersertal textures. Diogenitic orthopyroxene makes up ~4 vol.%.. Other minerals are calcic plagioclase, exsolved pigeonite, silica polymorph, fayalite, ilmenite, rare baddeleyite and Ni-free metal.

Geochemistry: Olivine (Fa81.8-82.2, FeO/MnO = 38-39, N = 2), diogenitic orthopyroxene (Fs27.4-30.5Wo4.5-4.9, FeO/MnO = 28-30, N = 2), orthopyroxene host (Fs57.8Wo1.4, FeO/MnO = 31), clinopyroxene exsolution lamella (Fs24.3Wo41.9, FeO/MnO = 28).

Classification: Eucrite (polymict breccia).

Specimens: 10.5 g including one polished thin section at UWB. The remainder is held by DPitt.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2015 Jan
Mass (g):43.5
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Fayalite (mol%):81.8-82.2
Ferrosilite (mol%):27.4-30.5; 57.8; 24.3
Wollastonite (mol%):4.5-4.9; 1.4; 41.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):10.5
Type spec location:UWB
Main mass:DPitt
Comments:MAC 100; submitted by A. Irving
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7098 approved meteorites from (Northwest Africa) (plus 2005 unapproved names)

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