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Northwest Africa 10180
Basic information Name: Northwest Africa 10180
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10180
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 32.7 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 386 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 30 Jun 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10180 (NWA 10180)

(Northwest Africa)

Purchased: 2011 Sep

Classification: HED achondrite (Howardite)

History: Purchased by John Curchin in September 2011 from a Moroccan dealer at the Denver Show.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia containing abundant diogenitic orthopyroxene (~70 vol.% of clast population), basaltic eucrite clasts and related crystalline debris in a finer grained matrix. Other minerals are olivine, exsolved pigeonite, calcic plagioclase, silica polymorph, chromite (with variable Al content), ilmenite and troilite.

Geochemistry: Olivine (Fa42.1 and 42.9, FeO/MnO = 47 and 49, N = 2), orthopyroxene (Fs20.8-21.4Wo1.8-1.9, FeO/MnO = 29-34, N = 3), orthopyroxene host 1 (Fs56.9Wo4.7, FeO/MnO = 28), clinopyroxene exsolution lamella 1 (Fs27.2Wo41.9, FeO/MnO = 29), orthopyroxene host 2 (Fs49.9Wo2.4, FeO/MnO = 26), clinopyroxene exsolution lamella 2 (Fs22.7Wo42.1, FeO/MnO = 26).

Classification: Howardite.

Specimens: 6.54 g including one polished thin section at UWB. The remainder is held by Mr. J. Curchin.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Denver
Date:P 2011 Sep
Mass (g):32.7
Pieces:1
Class:Howardite
Shock stage:low
Weathering grade:low
Fayalite (mol%):42.1
Ferrosilite (mol%):20.8-21.4; 56.9; 27.2; 49.9; 22.7
Wollastonite (mol%):1.8-1.9; 4.7; 41.9; 2.4; 42.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):6.54
Type spec location:UWB
Main mass:J. Curchin
Comments:JC15-4; 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)
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7483 approved meteorites from (Northwest Africa) (plus 1994 unapproved names)

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