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Northwest Africa 14149
Basic information Name: Northwest Africa 14149
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14149
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 600 g
Recommended:  CK4    [explanation]

This is 1 of 121 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 31 Aug 2021
Writeup from MB 110:

Northwest Africa 14149 (NWA 14149)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CK4)

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

Physical characteristics: Dark grayish to greenish rock with some fusion crust.

Petrography: The meteorite displays a grayish to greenish interior and is composed of sharply delineated and well separated chondrules (apparent mean diameter about 800 µm) and sparse CAIs (up to 2 mm) set in abundant recrystallized matrix dominated by ferroan Ni-bearing olivine. More minor phases include low-Ca pyroxene, Ca-pyroxene, and intermediate plagioclase. Opaque phases are abundant Cr-rich magnetite, FeS, and pentlandite; metal was not detected.

Geochemistry: olivine: Fa29.4±0.2 (Fa28.9-29.6, FeO/MnO=130±13; NiO=0.50±0.04 wt%, n=10); low-Ca pyroxene: Fs25.1±0.2Wo1.6±1.2 (Fs24.8-25.5Wo0.7-0.8, n=7); Ca-pyroxene: Fs9.3±0.3Wo48.2±0.4 (Fs8.8-9.6Wo47.5-48.6, n=5); feldspar: An30.2-79.9Ab19.8-65.4Or0.2-4.4, n=6; magnetite contains 4.5±0.2 wt% Cr2O3, n=3

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):600
Shock stage:S2
Weathering grade:low
Fayalite (mol%):29.4
Ferrosilite (mol%):25.1; 9.3
Wollastonite (mol%):1.6; 48.2
Classifier:A. Greshake, MNB
Type spec mass (g):20.1
Type spec location:MNB
Main mass:Mateusz Szyszka
Comments:Submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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