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iPhone mineral miners of Africa use bare hands | Daily ,

Watch video· This mine, created by hacking away at the top of a mountain in the heart of Africa, , Coltan – short for Columbite-tantalite – is a black tar-like mineral...

Coltan, the Congo and your cell phone - MIT

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Coltan: a new blood mineral - Technology & Science - CBCca

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Coltan Facts - Break The Silence Congo Week

Coltan: What You Should Know What is Coltan? Coltan is short for Columbite-tantalite - a black tar-like mineral found in major quantities in the Congo...

Coltan | Definition of Coltan by Merriam-Webster

Define coltan: a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum...

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A piece of columbite-tantalite, size 60 x 25 x 21 cm Coltan (short for columbite–tantalite and known industrially as tantalite) is a dull black metallic ore from ....

Coltan | Definition of Coltan by Merriam-Webster

Define coltan: a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum...

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Coltan - Wikipedia

Coltan (short for columbite–tantalite and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted...

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What Is Coltan? - ABC News

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It's used by almost everybody in smart phones and consumer electronics, and there is no simple way to keep conflict coltan out of the stream of legitimate minerals ....

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