A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
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. (author)
Mining World ; 14
1952
4 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
| Engineering Index Backfile | 1943
Viewfinder The world's rarest duck
Online Contents | 2010
Study of columbium-base alloys
| Engineering Index Backfile | 1968
Plasticity of Columbium Single Crystals
| NTIS | 1953
Columbium and tantalum : a materials survey
| TIBKAT | 1962