Français
2. Natural resources
Similar in chemistry, tantalum and niobium occur naturally together in the same ores. However, there are pyrochlore niobium deposits where tantalum is practically absent.
2.1 Minerals
Tantalum, less abundant than niobium, is dispersed in numerous ores.
World reserves stand at 36,400 t Ta content, half in Australia, and resources at 287,000 t Ta content
...
The Ultimate Scientific and Technical Reference
This article is included in
Metal manufacturing processes and recycling
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Natural resources
Extractive metallurgy
Bibliography
References
Websites
Tantalum
http://www.webelements.com/tantalum/
http://webmineral.com/chem/Chem-Ta.shtml
Niobium
Directory
Ferroniobium suppliers
Cambior (Niobec) http://www.cambior.com/
The Ultimate Scientific and Technical Reference
