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Discovery of Kangite, (Sc,Ti,Al,Zr,Mg,Ca)_2O_3, A New Ultra-Refractory Mineral in Allende

Ma, Chi and Tschauner, Oliver and Beckett, John R. and Rossman, George R. and Liu, Wenjun (2012) Discovery of Kangite, (Sc,Ti,Al,Zr,Mg,Ca)_2O_3, A New Ultra-Refractory Mineral in Allende. Meteoritics and Planetary Science, 47 (S1). A257-A257. ISSN 1086-9379. doi:10.1111/j.1945-5100.2012.01401_2.x.

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During a nano-mineralogy investigation of the Allende CV3 carbonaceous chondrite, we identified a new scandia mineral named "kangite" in an irregular ultra-refractory inclusion. It has a cubic Ia3 bixbyite-type structure and a formula unit (Sc,Ti,Al,Zr,Mg,Ca,)_2P_3. Field-emission SEM with EDS and electron back-scatter diffraction, electron microprobe and synchrotron micro-Laue diffraction were used to characterize the composition and structure. We report here the first occurrence of kangite in nature, as a new ultra-refractory oxide among the earliest solids formed in the solar nebula, and discuss its origin and significance for nebular processes. The mineral and the mineral name (kangite) have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA 2011-092).

Item Type:Article
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URLURL TypeDescription
Ma, Chi0000-0002-1828-7033
Tschauner, Oliver0000-0003-3364-8906
Rossman, George R.0000-0002-4571-6884
Additional Information:© 2012 Meteoritical Society. Issue published online: 6 Aug 2012. Article first published online: 8 Aug 2012.
Issue or Number:S1
Record Number:CaltechAUTHORS:20121002-151647642
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Official Citation: The 75th Annual Meeting of the Meteoritical Society Cairns, Australia, 12-17 August, 2012. Meteoritics & Planetary Science, 47: A35–A436. doi: 10.1111/j.1945-5100.2012.01401_2.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34643
Deposited By: Ruth Sustaita
Deposited On:02 Oct 2012 22:41
Last Modified:09 Nov 2021 23:09

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