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A startling discovery has the potential to change diamond exploration in Canada and around the world.
Research by geologists from the University of Alberta and De Beers Group, the world's largest diamond company, showed that "economic" diamond deposits can come from lherzolitic diamond substrates, a common rock type in Earth's mantle, which until now had only been peripherally associated with diamond formation.
Outcome - Project - Understanding - Diamonds - U
"The outcome of the project fundamentally changes our understanding of where diamonds come from," said U of A geologist Thomas Stachel, the Canada Research Chair in Diamonds. "(It) has the potential to cause diamond companies to retool their approach to exploration."
Diamonds in ancient continental regions, such as the Canadian Shield, were thought to have grown mainly in different types of mantle rocks. The assumption, which has guided exploration for decades, is now being turned on its head.
Research - Team - Samples - De - Beers
The research team used samples from the De Beers Group Victor Mine in the James Bay region of northern Ontario. The area, part of the Canadian Shield, is characterized by a large-scale heating event that occurred...
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