Meteorite Thin Section - CK4 | NWA 10563 Carbonaceous Chondrite
|Northwest Africa 10563|
Name: Northwest Africa 10563
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10563
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 1139 g
This is 1 of 100 approved meteorites classified as CK4. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
|Comments:||Approved 26 Mar 2016|
Writeup from MB 105:
Northwest Africa 10563 (NWA 10563)
Purchased: 2015 Nov
Classification: Carbonaceous chondrite (CK4)
History: Purchased by Bob Falls in November 2015 from a dealer in Zagora, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed granular chondrules (apparent diameter 1.3±1.0 mm; some with concentric dust rims) containing Cr-magnetite are set in a finer matrix containing Cr-magnetite and intermediate plagioclase. The studied thin section contains an inclusion (7 mm across) composed mainly of aluminous orthopyroxene and calcic bytownite (zoned to oligoclase rim) plus accessory olivine, K-feldspar and composite grains of magnetite (Ti- and Cr-free) with ilmenite.
Geochemistry: Olivine (Fa29.4-29.7, FeO/MnO = 95-105, N = 3), orthopyroxene (Fs25.1-25.2Wo2.6-0.6, N = 3), clinopyroxene (Fs10.8-14.7Wo46.1-47.0, N = 2). Orthopyroxene in inclusion (Fs26.8Wo0.5, Al2O3 = 5.1 wt.%), plagioclase in inclusion (core An89.8Or0.1, rim An25.9Or9.1).
Classification: Carbonaceous chondrite (CK4).
Specimens: 26.4 g including one polished thin section at UWB; remainder with Mr. R. Falls.
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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