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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 513 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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