Recent Examples of kimberlite from the Web
The Nyurbinsky open pit mine spirals down for about a thousand feet, circling around a core of ore called a kimberlite pipe.
The diamond-bearing kimberlite formations in the 11,000-foot high Maluti mountains had for years been largely untouched by mining companies, due to the difficulty and cost involved in extracting the stones from such heights.
Kimberlites are volcanic eruptions that bring material from the depths where diamonds can form.
Most kimberlites are old, too, forming from the Proterozoic (between 541 million and 2.5 billion years ago) up to the Cretaceous (79-145 million years ago).
Many diamonds are embedded in a dense volcanic rock called kimberlite, which gets its name from the town of Kimberley, South Africa, where several of the world’s first diamond mines were discovered.
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