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Northwest Africa 11767
Basic information Name: Northwest Africa 11767
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11767
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 15 g
Classification
  history:
Recommended:  Lunar    [explanation]

This is 1 of 88 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11767 (NWA 11767)

(Northwest Africa)

Purchased: 2012

Classification: Lunar meteorite

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Many small light greenish fragments lacking any fusion crust.

Petrography: Monomict olivine-rich gabbroic breccia predominantly composed of up to 4 mm sized Fe-rich olivine, pigeonite, augite and calcic plagioclase. Minor phases include chromite, troilite and K-feldspar. The meteorite contains abundant shock melt veins along which some olivine has been transformed into ringwoodite.

Geochemistry: olivine: Fa31.6±0.2 (Fa31.3-32.0, n=13, FeO/MnO=85-105); pigeonite: Fs25.6±1.1Wo10.7±2.8 (Fs23.3-27.7Wo5.9-16.4, n=12, FeO/MnO=46-63); augite: Fs16.1±1.0Wo35.7±2.1 (Fs14.8-17.8Wo32.1-39.0, n=12, FeO/MnO=41-52); calcic plagioclase: An93.1±0.8 (An91.1-93.9, n=10)

Classification: Lunar Olivine-Gabbros. The meteorite might be paired with NWA 773 and paired stones.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2012
Mass (g):15
Pieces:many
Class:Lunar
Shock stage:high
Weathering grade:low
Fayalite (mol%):31.6
Ferrosilite (mol%):25.6; 16.1
Wollastonite (mol%):10.7; 35.7
Classifier:A. Greshake, MNB
Type spec mass (g):3
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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