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Northwest Africa 8386
Basic information Name: Northwest Africa 8386
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8386
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 1002 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 374 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 6 Jun 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8386 (NWA 8386)

(Northwest Africa)

Purchased: 2014

Classification: HED achondrite (Howardite)

History: Purchased by B. Reed in Tucson, February 2014.

Physical characteristics: Many small fragments with identical appearance and irregular, dark-brown, weathered exterior. Saw cut reveals breccia with white, green, and dark gray clasts.

Petrography: (C. Agee) Microprobe examination of a polished mount shows a fragmental to cataclastic breccia with equilibrated (exsolution lamellae) and unequilibrated (igneous zoned) pyroxenes throughout. Silica, hedenbergite, troilite, ilmenite, chromite, and iron-nickel metal present. Approximately 30% of this meteorite is diogenitic, ~60% is basaltic eucrite, and ~10% is cumulate eucrite.

Geochemistry: (C. Agee and N. Muttik, UNM) Diogenite minerals: low-Ca pyroxene Fs32.5±3.2Wo3.6±0.7, Fe/Mn=31±1, n=6; olivine Fa31.9, Fe/Mn=57, n=1; plagioclase An93.5±1.0Ab6.3±1.0Or0.3±0.0, n=2. Basaltic eucrite minerals: low-Ca pyroxene Fs56.5±3.4Wo5.9±3.4, Fe/Mn=32±1, n=7; augite Fs32.4±2.4Wo37.1±2.7, Fe/Mn=31±3, n=6, olivine Fa54.0±3.6, Fe/Mn=49±0, n=2; plagioclase An82.7±5.4Ab16.5±5.1Or0.9±0.3, n=4. Cumulate eucrite minerals: low-Ca pyroxene Fs42.6±6.6Wo3.0±0.8, Fe/Mn=32±1, n=3; augite Fs23.1Wo39.3, Fe/Mn=14, n=1; plagioclase An91.0±0.8Ab8.6±0.8Or0.4±0.1, n=3.

Classification: Achondrite (howardite) likely paired with NWA 8343.

Specimens: 23.8 g including a probe mount on deposit at UNM, Reed holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2014
Mass (g):1002
Pieces:Many
Class:Howardite
Classifier:C. Agee, UNM
Type spec mass (g):23.8
Type spec location:UNM
Main mass:B. Reed
Comments:Field name BR90; 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)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; 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)
KD Meteorites   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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