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Northwest Africa 14059
Basic information Name: Northwest Africa 14059
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14059
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 18.5 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 17 Jul 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14059 (NWA 14059)

(Northwest Africa)

Purchased: 2019

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a meteorite dealer at the mineral show in Munich, Germany.

Physical characteristics: Grayish fragment partly covered with fusion crust.

Petrography: Unbrecciated gabbroic eucrite composed of exsolved pyroxene and often lath-shaped calcic plagioclase up to 1 mm in size. Some pyroxenes show compositional zoning attesting to a low degree of thermal metamorphism. Minor phases include silica, chromite, ilmenite, fayalite, FeS, and secondary barite. No metallic iron has been detected.

Geochemistry: zoned pyroxene: Fs47.0±9.0Wo8.3±1.7 (Fs36.0-59.3Wo5.4-10.6, FeO/MnO=26-30, n=11); low-Ca pyroxene host to augite exsolution lamellae: Fs62.0±0.8Wo4.7±0.9 (Fs60.7-63.2Wo3.1-6.2, FeO/MnO=25-27, n=10); Ca-pyroxene exsolution lamellae: Fs30.9±0.5Wo42.4±0.5 (Fs30.0-32.3Wo41.3-43.0, FeO/MnO=27-32, n=11); calcic plagioclase: An81.9±1.6 (An79.9-84.8, n=11)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2019
Mass (g):18.5
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:moderate
Ferrosilite (mol%):47.0; 62.0; 30.9
Wollastonite (mol%):8.3; 4.7; 42.4
Classifier:A. Greshake, MNB
Type spec mass (g):3.7
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
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 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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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