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Northwest Africa 14477
Basic information Name: Northwest Africa 14477
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14477
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 36 g
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 15 Dec 2021
Writeup from MB 110:

Northwest Africa 14477 (NWA 14477)

(Northwest Africa)

Purchased: 2021 Aug

Classification: Rumuruti chondrite (R3)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in August, 2021.

Physical characteristics: Dark grayish rock almost completely covered with fresh fusion crust.

Petrography: The meteorite displays an unbrecciated fresh dark-grayish interior and is composed of well-defined mostly rounded chondrules (apparent mean diameter about 400 µm) and mineral fragments set in abundant matrix dominated by Fe-rich olivine. Sodic plagioclase occurs as small isolated grains in the matrix. Opaque phases include often aggreated pentlandite and troilite as well as Ti-bearing chromite; metal is absent.

Geochemistry: olivine: Fa25.2±17.5 (Fa1.2-47.3, n=24); low-Ca pyroxene: Fs20.3±8.1Wo1.9±0.7 (Fs9.0-36.2Wo0.6-3.9, n=23); Ca-pyroxene: Fs10.5±3.0Wo28.7±4.8 (Fs7.9-18.8Wo17.9-34.6, n=15)

Data from:
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P 2021 Aug
Mass (g):36
Shock stage:S2
Weathering grade:low
Fayalite (mol%):25.2
Ferrosilite (mol%):20.3; 10.5
Wollastonite (mol%):1.9; 28.7
Magnetic suscept.:3.14
Classifier:A. Greshake, MNB
Type spec mass (g):7.2
Type spec location:MNB
Main mass:Salamu Ali
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 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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