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Northwest Africa 14244
Basic information Name: Northwest Africa 14244
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14244
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 15.4 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 515 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14244 (NWA 14244)

Morocco

Purchased: March 2015

Classification: HED achondrite (Eucrite)

History: T. Mikouchi purchased the meteorite from a Moroccan dealer

Physical characteristics: A single rounded stone of 15.4 g, ~80% covered with fresh black fusion crust.

Petrography: (T. Mikouchi: UTok) Monomict breccia consisting of basaltic clasts with ophitic to subophitic textures with abundant shock melt veins. The sizes of pyroxene and plagioclase are up to 2 mm and both minerals show undulatory extinction. Augite exsolution lamellae in low-Ca pyroxene and vice versa (~10 micromemters wide). Plagioclase is partly transformed to maskelynite. Accessory phases are a silica polymorph, ilmenite, chromite, and traces of troilite and Ni-poor Fe metal.

Geochemistry: Pyroxenes are low-Ca pyroxene (Fs57.1-65.1Wo1.5-11.5, N=225) and augite (Fs26.3-39.5Wo29.9.9-45.4, N=35). Wt% FeO/MnO of low-Ca pyroxene is 26-40. Plagioclase is An92.1-85.9Or0.3-0.9 (N=50).

Classification: Eucrite (monomict breccia)

Specimens: A 12.26 g type specimen is on deposit at UTok.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P March 2015
Mass (g):15.4 g
Pieces:1
Class:Eucrite
Shock stage:Moderate
Weathering grade:Minor
Ferrosilite (mol%):57.1-65.1;26.3-39.5
Wollastonite (mol%):1.5-11.5;29.9.9-45.4
Classifier:T. Mikouchi, UTok
Type spec mass (g):12.26 g
Type spec location:UTok
Main mass:T. Mikouchi, UTok
Comments:Submitted by T. Mikouchi (UTok)
Institutions
   and collections
UTok: University Museum, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan (institutional address; updated 3 Oct 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1676 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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