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

Statistics:
     This is 1 of 7810 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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