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Northwest Africa 13663
Basic information Name: Northwest Africa 13663
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13663
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 250 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 217 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 10 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13663 (NWA 13663)

(Northwest Africa)

Find: 2019

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased in October, 2019 by Shun-Chung Yang from Habib-naji Naji in Morocco.

Physical characteristics: Two stones with slightly weathered fusion crust.

Petrography: (D. Sheikh, FSU) Specimen is a breccia composed of cumulate clasts containing calcic plagioclase laths, high-Ca pyroxene, and pigeonite (250±50 µm) set within a finer-grained matrix containing ilmenite (some containing up to 8.9 wt% Cr2O3) and SiO2-rich glass.

Geochemistry: Pigeonite (Fs49.7±15.1Wo10.2±5.2, range Fs33.0-75.1Wo6.2-22.5, FeO/MnO=28±6, n=32), High-Ca Pyroxene (Fs58.1±1.2Wo29.0±4.8, range Fs57.1-59.4Wo25.0-34.3, FeO/MnO=35±7, n=3), Calcic Plagioclase (An90.8±1.7, range An87.1-92.8, n=13).

Classification: Achondrite (eucrite, brecciated)

Specimens: 26.1 g at UCLA; main mass with Shun-Chung Yang.

Data from:
  MB110
  Table 0
  Line 0:
Date:2019
Mass (g):250
Pieces:2
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):49.7±15.1, 58.1±1.2
Wollastonite (mol%):10.2±5.2, 29.0±4.8
Classifier:D. Sheikh, FSU
Type spec mass (g):26.1
Type spec location:UCLA
Main mass:Shun-Chung Yang
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
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
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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