Kimberlita - definition

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Kimberlita - definition



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Kimberlita



La kimberlita es una roca ígnea y básica de la que se obtienen los diamantes (también se dan en otro tipo de roca conocido como lamproíta). Los depósitos en Kimberley, Sudáfrica fueron los primeros en ser reconocidos, de ahí el origen de su nombre.

Esta roca se formó en el magma fundido a gran profundidad, presión y temperatura bajo la superficie de la Tierra hace más de 100 millones de años, donde el carbono cristalizó en forma de diamante. Posteriormente la kimberlita ascendió por grietas volcánicas llamadas chimeneas donde actualmente se acumula el diamante incrustado en esta roca o en la peridotita y liberado en la superficie de la Tierra por los agentes atmosféricos.

http://es.wikipedia.org/wiki/Kimberlita



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