Sentences with phrase «kimberlite pipes»
Kimberlite pipes bring the gems to the surface in eruptions that sometimes rise faster than the speed of sound.
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Haggerty says a rule of sixes applies: Of the more than 6000 known kimberlite pipes in the world, about 600 contain diamonds.
A scientist has found that a thorny, palmlike plant in Liberia seems to grow only on top of kimberlite pipes, which are known to contain diamonds.
At Ekati, the company expects to start extracting from a high - grade kimberlite pipe called Misery in 2016 and has others in the works.
In 2013, near an area called Camp Alpha, he discovered a new kimberlite pipe 500 meters long and 50 meters wide.
West Africa has many «artisanal» operations in which people sift through river sediments for the occasional diamond eroded from a kimberlite pipe upstream.
Rubidium is the second most reactive metal and is A minimum age for the premier kimberlite pipe yielded by biotite Rb Sr measurements, with related galena isotopic data ☆