Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nigeria columbite is usually found in alluvial deposits in conjunction with tinstone derived by weathering of recent granites and earlier pegmatites; columbite occurs in proportions up to 4% of amount of tinstone; beneficiation by means of electrostatic and air separation; concentrate specification; strength of columbium alloys at high temperature; tantalum as substitute for columbium in alloys.
Nigeria columbite is usually found in alluvial deposits in conjunction with tinstone derived by weathering of recent granites and earlier pegmatites; columbite occurs in proportions up to 4% of amount of tinstone; beneficiation by means of electrostatic and air separation; concentrate specification; strength of columbium alloys at high temperature; tantalum as substitute for columbium in alloys.
Columbium-rarest jet metal
Min World
Cothay, F.H. (Autor:in)
Mining World ; 14
1952
4 pages
Aufsatz (Zeitschrift)
Englisch
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