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Northwest Africa 14859
Basic information Name: Northwest Africa 14859
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14859
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 405 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 69 approved meteorites classified as CK3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14859 (NWA 14859)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CK3)

History: The meteorite was purchased from a meteorite dealer in Algeria.

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite displays a grayish to light brownish interior and is composed of separated and well-defined partly flattened chondrules (apparent mean diameter about 800 µm) and few CAIs (up to 3 mm) in a fine-grained ferroan matrix. Chondrules often have igneous rims. Highly unequilibrated olivine and low-Ca pyroxene are the dominating mineral phases. Less abundant phases include Ca-pyroxene, intermediate plagioclase, and very minor FeS. Cr-bearing magnetite is abundant; metal was not detected.

Geochemistry: olivine: Fa15.0±13.5 (Fa1.0-39.8, n=15); low-Ca pyroxene: Fs1.5±0.8Wo1.0±0.1 (Fs0.8-3.1Wo0.9-1.2, n=10); magnetite compositions (wt%): Cr2O3=2.30±0.95, TiO2=0.38±0.17, NiO=0.28±0.03, Al2O3=2.96±0.27 (n=12).

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):405
Pieces:1
Class:CK3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):15.0
Ferrosilite (mol%):1.5
Wollastonite (mol%):1.0
Classifier:A. Greshake, MNB
Type spec mass (g):20.5
Type spec location:MNB
Main mass:Mateusz Szyszka
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
MS   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8420 approved meteorites from (Northwest Africa) (plus 1900 unapproved names)

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