Coltan - WikipediaColtan is a dull black metallic ore from which the elements niobium and tantalum are extracted. .. Miners consider coltan mining a way to provide for themselves in the face of widespread war and conflict and a government that has no concern ... Report from Raise Hope for Congo information campaign, of Enough Project.info on tantalite and how to mine it,Tantalite - WikipediaThe mineral group tantalite [(Fe, Mn)Ta2O6] is the primary source of the chemical element . The mining of tantalite causes many environmental and social problems in Democratic Republic of . What links here · Related changes · Upload file · Special pages · Permanent link · Page information · Wikidata item · Cite this page.
info on tantalite and how to mine it