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Northwest Africa 7159
Basic information Name: Northwest Africa 7159
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7159
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 201 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 255 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 May 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7159 (NWA 7159)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Marcin Cimała in 2011 from a dealer in Erfoud, Morocco.

Petrography: (T. Bunch and J. Wittke, NAU; A. Irving and S. Kuehner, UWS) Brecciated cumulate eucrite consisting of exsolved pigeonite and anorthite with accessory silica polymorph, ilmenite and metal.

Geochemistry: Orthopyroxene host (Fs56.6-57.1Wo2.0-1.9, FeO/MnO = 28-30, N = 3), clinopyroxene exsolution lamellae (Fs24.1-24.5Wo42.6-41.3, FeO/MnO = 30-31, N =3).

Classification: Eucrite (cumulate, monomict breccia).

Specimens: 20.1 g including one polished thin section at PSF; main mass with Mr. M. Cimała.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2011
Mass (g):201
Pieces:1
Class:Eucrite-mmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):56.6-57.1; 24.1-24.5
Wollastonite (mol%):2.0-1.9; 42.6-41.3
Classifier:T. Bunch and J. Wittke, NAU; A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:PSF
Main mass:M. Cimala
Comments:MC 083; submitted by A. Irving
Institutions
   and collections		 NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
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)
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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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Piotr gural100   
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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