header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 11 Oct 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 11083
Basic information Name: Northwest Africa 11083
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11083
Observed fall: No
Year found: 2016
Country: Western Sahara
Mass:help 7.7 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 341 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Feb 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11083 (NWA 11083)

Western Sahara

Purchased: 2016

Classification: HED achondrite (Eucrite, polymict)

Physical characteristics: Light grey stone. Cut surface reveals dark-gray interior with lighter clasts to 5 mm.

Petrography: Brecciated igneous rock with basaltic (ophitic to sub-opthitic texture) and cumulate clasts in a clastic matrix. Main minerals are low-Ca pyroxenes (with augite exsolution) and plagioclase. rare metal. Clasts of diogenitic composition are found but amount to less than 10 vol% of the rock.

Geochemistry: low-Ca pyroxene: basaltic material Fs59.1±2.5Wo5.0±1.6 (N=3), cumulate material Fs40.6±7.6Wo5.0±3.0 (N=3), diogenite material Fs26.0Wo3.0 (N=1), FeO/MnO=31.8±2.4 (N=7). Plagioclase An92.4±2.2Ab7.3±2.1Or0.3±0.1 (N=2). Magnetic susceptiblity log χ (× 10-9 m3/kg) = 3.22.

Classification: Eucrite, polymict. Weathering low.

Specimens: 1.4 g at CEREGE. Main mass with Michel Franco.

Data from:
  MB106
  Table 0
  Line 0:
Date:P 2016
Mass (g):7.65
Pieces:1
Class:Eucrite-pmict
Weathering grade:low
Ferrosilite (mol%):46.5±13.1 (N=7)
Wollastonite (mol%):4.7±2.3
Magnetic suscept.:3.22
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):1.6
Type spec location:CEREGE
Main mass:Michel Franco
Comments:work name MF2016-02; 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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Western Sahara
Coordinates:Unknown.

Statistics:
     This is 1 of 206 approved meteorites from Western Sahara (plus 20 unapproved names)

Direct link to this page