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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
Classification
  history:
Recommended:  CK4    [explanation]

This is 1 of 112 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
Writeuphelp
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:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):600
Pieces:1
Class:CK4
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
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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