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Northwest Africa 11927
Basic information Name: Northwest Africa 11927
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11927
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 592 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 32 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 15 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11927 (NWA 11927)

(Northwest Africa)

Purchased: 2018

Classification: Rumuruti chondrite (R3)

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

Physical characteristics: Light brownish individual lacking any fusion crust.

Petrography: The meteorite displays a light brownish to orange interior and is composed of up to 5 mm sized angular type 3 clasts and matrix. Olivine and low-Ca pyroxene are compositionally unequilibrated in clasts and matrix; Fe-rich olivine is the most dominant mineral phase in the matrix. Chondrules have an average diameter of about 400 μm. More minor phases include low-Ca pyroxene, Ca-pyroxene, sodic plagioclase, sulfides, and Ti-bearing chromite; no metal has been detected.

Geochemistry: Olivine: Fa26.3±13.8 (Fa1.6-44.9, n=26); low-Ca pyroxene: Fs18.7±8.8Wo1.5±0.6 (Fs8.1-30.5Wo0.4-2.8, n=17); Ca-pyroxene: Fs10.3±3.0Wo42.1±5.4 (Fs5.2-16.1Wo31.7-47.3, n=12)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2018
Mass (g):592
Pieces:1
Class:R3
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):26.3
Ferrosilite (mol%):18.7; 10.3
Wollastonite (mol%):1.5; 42.1
Magnetic suscept.:2.91
Classifier:A. Greshake, MNB
Type spec mass (g):31.2
Type spec location:MNB
Main mass:Hichame Mimaghador
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional 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 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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