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Northwest Africa 11769
Basic information Name: Northwest Africa 11769
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11769
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 210 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 34 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 11 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11769 (NWA 11769)

(Northwest Africa)

Purchased: 2014

Classification: Rumuruti chondrite (R3)

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

Physical characteristics: Brownish individual without fusion crust.

Petrography: The meteorite shows an orange interior and is composed of 200 to 800 μm sized chondrules (mean about 400 μm) in abundant matrix dominated by Fe-rich olivine. Olivine and low-Ca pyroxene in chondrules are mostly unequilibrated. Minor phases include pentlandite, sodic plagioclase, and Ti-bearing chromite; no metal has been detected.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2014
Mass (g):210
Pieces:1
Class:R3
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):36.0±4.8 (26.6-39.0, n=22)
Ferrosilite (mol%):19.8±4.2 (13.6-26.2, n=27)
Wollastonite (mol%):0.7±0.3 (0.2-1.6, n=27)
Classifier:A. Greshake, MNB
Type spec mass (g):20.3
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 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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