'Kalkowskyn' from Ouro Preto, Minas Gerais, Brazil: a mixture of pseudorutile, rutile, and hematite

Autor:	Daniel Atencio, Klaus Thalheim
Rok vydání:	2013
Předmět:	biology Muscovite Geochemistry Mineralogy HEMATITA Hematite engineering.material biology.organism_classification Almandine Geochemistry and Petrology Rutile visual_art visual_art.visual_art_medium engineering Quartz Geology Powder diffraction Ilmenite Zircon
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
Popis:	The holotype specimen of the discredited “kalkowskyn”, from Ouro Preto, Minas Gerais, Brazil, was investigated by EDS and X-ray powder diffraction. It consists of a mixture of pseudorutile, rutile, and hematite, probably generated by alteration of ilmenite. Intergrowths of rutile and hematite, with exsolution textures, were interpreted to have formed from pseudorutile. Associated minerals are quartz, almandine, muscovite, monazite-(Ce), and zircon.
Databáze:	OpenAIRE
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