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Northwest Africa 10166
Basic information Name: Northwest Africa 10166
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10166
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1700 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 230 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 11 Jun 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10166 (NWA 10166)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Steve Arnold in Morocco, 2015.

Physical characteristics: Single stone. Weathered exterior, a saw cut shows fine-grained, light-gray breccia with a few shock melt veins present.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows approximately ~65% pyroxene, ~30% plagioclase. Accessory phases observed are troilite, chromite, ilmenite, and silica.

Geochemistry: (C. Agee and N. Muttik, UNM) Low Ca pyroxene Fs59.0±1.1Wo2.2±0.7, Fe/Mn=32±1, n=7; augite Fs28.5±5.2Wo40.6±7.0, Fe/Mn=33±1, n=6, plagioclase An88.1±2.0Ab11.4±2.0Or0.5±0.1, n=5.

Classification: Monomict Eucrite, equilibrated.

Specimens: 20.1 g including a probe mount on deposit at UNM, Steve Arnold holds the main mass.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):1700
Pieces:1
Class:Eucrite-mmict
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):59.0±1.1, 28.5±5.2
Wollastonite (mol%):2.2±0.7, 40.6±7.0
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:Steve Arnold
Comments:Fieldname SA-8; submitted by C. Agee
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John Tanner   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7101 approved meteorites from (Northwest Africa) (plus 2004 unapproved names)

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