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Northwest Africa 10781
Basic information Name: Northwest Africa 10781
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10781
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 91 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 386 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 23 Aug 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10781 (NWA 10781)

Morocco

Purchased: 2015 Oct

Classification: HED achondrite (Howardite)

History: Bought by Jean Redelsperger from Abdellah Afiniss in Agadir in October 2015.

Physical characteristics: A single grayish stone without fusion crust. Darker clasts to cm are visible at the surface. Cut surface reveals a light-gray interior with dark clasts.

Petrography: Brecciated rock with cataclastic matrix. Clasts to 1 cm, some with coarse sub-ophitic texture. Main minerals are pyroxenes (some zoned, some exsolved), plagioclase. Accessory olivine, troilite (sometimes as tiny grains aligned in silicates), chromite (to 700 μm) in matrix and silicate clasts, ilmenite, silica polymorph, Fe-Ni metal.

Geochemistry: Pyroxenes: diogenitic orthopyroxene Fs27.8±1.1Wo3.2±0.1 (N=4), eucritic Ca-pyroxene Fs46.6±7.9Wo15.5±5.0 (N=3), FeO/MnO=32.5±4.3 (N=7). Plagioclase An84.2±2.2Ab15.2±2.2Or0.6±0.1 (N=4). Olivine Fa60.5, FeO/MnO=47.0 (N=1). Magnetic susceptibilty log χ (× 10-9 m3/kg) = 3.26.

Classification: Achondrite (Howardite).

Specimens: 18.4 g at CEREGE. Main mass with Jean Redelsperger.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2015 Oct
Mass (g):91
Pieces:1
Class:Howardite
Weathering grade:minimal
Fayalite (mol%):60.5 (N=1)
Ferrosilite (mol%):27.8±1.1 ; 46.6±7.9
Wollastonite (mol%):3.2±0.1 ; 15.5±5.0
Magnetic suscept.:3.26
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):18.4
Type spec location:CEREGE
Main mass:Jean Redelsperger
Comments:Submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
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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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Allmeteorite.com   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1523 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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