Qu'est-ce que le coltan et quelle est son utilité ?

Qu'est-ce que le coltan et quelle est son utilité ?

Le mot coltan est une abréviation pour colombite-tantalite. ... C'est le tantale qui est surtout prisé quand on extrait du coltan. Ce métal a une très grande résistance à la corrosion. On l'utilise entre autres pour fabriquer des condensateurs, des composants que l'on retrouve dans nos téléphones mobiles.

Pourquoi minerais de sang ?

Les minerais de sang, « autrement connus sous le nom de « minerais de conflit » », se trouvent donc dans des régions où « des groupes armés s'affrontent pour le contrôle des différentes mines réparties sur leurs territoires en vue de financer leurs guerres » (site internet novethic.fr).

Où Trouve-t-on le tantale ?

Afrique centrale Le minerai de tantale peut être facilement enrichi au moyen de techniques simples de traitement par concentration gravimétrique. Les gisements associés aux placers se trouvent notamment en Afrique centrale (République démocratique du Congo, Rwanda, Burundi).

What is coltan and how is it mined?

• Coltan may be an important mineral when it comes to the construction of electronics, but as mentioned above, the methods used to mine it are not cutting edge at all. Coltan is often mined by hand by artisanal miners, with rock and sand being panned and filtered until the mineral sinks to the bottom.

Where is the coltan mine in Congo?

• As one can see the Coltan mine is located right next to the country of Rwanda. This allows the trafficking of coltan to be smuggled out and sold by the Rwanda militia which in turns makes a huge profit and are able to maintain control of the eastern part of the Congo. The map also shows which parts of the DRC is being controlled by who.

What are the effects of coltan mining on the environment?

• Coltan mines operate under boom-bust economics and not only strip the mineral from the land, but also cause environmental degradation. In mining towns that depend on coltan for their wealth, fewer people cultivate the land. Numerous instances of famine related to the mining operations contribute to increasingly unsustainable types for land use.

Do coltan mines use indigenous people for their operations?

• According to some activists, coltan mines in national reserves often forcibly use indigenous people for their operations. In Colombia - a very minor coltan producing country - the Puinawai natives call the coltan mines “guns, pointed at the earth beneath [the] sacred mountain.".