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Northwest Africa 14679
Basic information Name: Northwest Africa 14679
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14679
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 24 g
Meteoritical Bulletin:  MB 111  (2023)  CM2
Recommended:  CM2    [explanation]

This is 1 of 641 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 19 Feb 2022
Writeup from MB 111:

Northwest Africa 14679 (NWA 14679)

(Northwest Africa)

Purchased: 2005

Classification: Carbonaceous chondrite (CM2)

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

Physical characteristics: The meteorite displays a brownish interior and is a brecciated carbonaceous chondrite composed of small (apparent mean diameter about 250 μm) chondrules, chondrule pseudomorphs, mineral fragments, and rare CAIs, most surrounded by fine-grained dust rims set into abundant fine-grained matrix. The matrix is Fe-rich and strongly altered. Sulfides are mostly replaced by Fe-oxides and calcite-filled veins are ubiquitous.

Geochemistry: Matrix analyses yield FeO=37.5±0.9 wt% and an average total of 79.0±1.8 wt% (5 µm defocused beam, N=8), the latter indicating the presence of hydrous minerals.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2005
Mass (g):24
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):16.7±15.7 (0.5-47.4, n=18)
Ferrosilite (mol%):6.4±10.6 (1.1-35.3, n=15)
Wollastonite (mol%):1.6±0.8 (0.6-36, n=15)
Magnetic suscept.:3.59
Classifier:A. Greshake, MNB
Type spec mass (g):4.9
Type spec location:MNB
Main mass:Polandmet - Marcin Cimala
Comments:Submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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