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Northwest Africa 8704
Basic information Name: Northwest Africa 8704
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8704
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 503 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 513 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8704 (NWA 8704)

(Northwest Africa)

Purchased: 2014 Oct

Classification: HED achondrite (Eucrite)

History: Purchased in Morocco by Stefan Ralew in October 2014.

Physical characteristics: Single stone (503 g) lacking fusion crust with a mottled light gray and black appearance.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained (grainsize < 0.3 mm) with granuloblastic texture. Minerals are unexsolved orthopyroxene, clinopyroxene, calcic plagioclase, ilmenite, Ti-chromite and troilite.

Geochemistry: Orthopyroxene (Fs59.6-61.0Wo1.7-2.3, FeO/MnO = 33-35, N = 3), clinopyroxene (Fs25.1-26.1Wo43.6-43.1, FeO/MnO = 31-35, N = 3).

Classification: Eucrite (granoblastic).

Specimens: 20.2 g in the form of one polished endcut at UWB; main mass with Ralew.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2014 Oct
Mass (g):503
Pieces:1
Class:Eucrite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):59.6-61.0; 25.1-26.1
Wollastonite (mol%):1.7-2.3; 43.6-43.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:S. Ralew
Comments:RA10-1; 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)
Ralew: Stefan Ralew, Kunibertstra├če 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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