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Northwest Africa 10707
Basic information Name: Northwest Africa 10707
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10707
Observed fall: No
Year found: 2016
Country: Western Sahara
Mass:help 23.7 g
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 364 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 20 Jun 2016
Writeup from MB 105:

Northwest Africa 10707 (NWA 10707)

Western Sahara

Purchased: Jan 2016

Classification: HED achondrite (Eucrite, polymict)

History: Purchased in January 2016; reportedly found in El-Hamada, November 2015.

Physical characteristics: Single stone with fresh fusion crust. A saw-cut surface shows a very fine-grained breccia with light gray color.

Petrography: (C. Agee, UNM) This is a polymict breccia with at least two distinct lithologies: 1) equilibrated type 6 basaltic eucrite and 2) cumulate eucrite. Ubiquitous sulfide and chromite present. Some shock melt was observed.

Geochemistry: (C. Agee and M. Spilde, UNM) Cumulate low-Ca pyroxene Fs36.1±2.8Wo2.8±1.0, Fe/Mn=31±0, n=2; basaltic eucrite low-Ca pyroxene Fs52.1±2.6Wo5.1±2.7, Fe/Mn=31±1, n=9; basaltic eucrite high-Ca pyroxene Fs25.7±4.1Wo38.6±6.0, Fe/Mn=29±4, n=2; plagioclase An79.6±6.7, n=4.

Classification: Polymict eucrite

Specimens: 5 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Jan 2016
Mass (g):23.7
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):36.1±2.8, 52.1±2.6, 25.7±4.1
Wollastonite (mol%):2.8±1.0, 5.1±2.7, 38.6±6.0
Classifier:C. Agee, UNM
Type spec mass (g):5
Type spec location:UNM
Main mass:DPitt
Comments:Field name MCVICH036; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Western Sahara

     This is 1 of 245 approved meteorites from Western Sahara (plus 19 unapproved names)

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