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Northwest Africa 11765
Basic information Name: Northwest Africa 11765
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11765
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 15 g
Classification
  history:
Recommended:  CK6    [explanation]

This is 1 of 56 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 11 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11765 (NWA 11765)

(Northwest Africa)

Purchased: 2014

Classification: Carbonaceous chondrite (CK6)

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

Physical characteristics: Small individual almost completely covered with fusion crust.

Petrography: The meteorite is largely composed of fine-grained recrystallized matrix mainly consisting of ferrous olivine. Chondrules are only rarely encountered; one CAI was found. Minor phases include plagioclase, low-Ca pyroxene, Ca-pyroxene and sulfides. Cr-rich magnetite is abundant, metal is virtually absent.

Geochemistry: olivine: Fa31.3±0.3, n=14, FeO/MnO=128±13; low-Ca pyroxene:Fs26.4±0.3Wo1.6±1.4, n=10; feldspar: An79.8±0.8Ab19.9±0.8, n=5

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2014
Mass (g):15
Pieces:1
Class:CK6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):31.3±0.3 (n=14)
Ferrosilite (mol%):26.4±0.3 (n=10)
Wollastonite (mol%):1.6±1.4 (n=10)
Classifier:A. Greshake, MNB
Type spec mass (g):3.3
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 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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