coltan

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col·tan

 (kŏl′tăn′)

coltan

(ˈkɒlˌtæn)
n
(Elements & Compounds) a metallic ore found esp in the E Congo, consisting of columbite and tantalite (a source of the element tantalum)
[C20: from columbite + tantalite]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.coltan - a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
The legislation proposes similar traceability standards for tungsten, tin, col-tan and gold as already exist for diamonds, thanks to the Kimberley Process of certification.
Some of Africa's richest tantalum deposits, occurring as 'col-tan', short for columbite-tantalum, are situated in the eastern reaches of the Democratic Republic of Congo and are said to be financing some of the military factions engaged in the two and a half year civil war.