kimberlite

Several attempts have been made to find diamonds in the kimberlite with no success.

The kimberlite plug has been dated being about 99 million years old.

But it won't spend ten rand to find the kimberlite of the human soul.

"That little lake is right on top of a very ancient kimberlite pipe.

No diamonds have been found in the Kansas kimberlite occurrences.

They found traces of volcanic rock kimberlite which are usually associated with diamonds.

If more kimberlite structures are found, and the price of diamonds increases as expected, a mine could be in the making within 10 years.

Over 600 kimberlite formations have been found throughout Canada.

We've even had a kimberlite diatreme for the first time in thirty thousand orbits.

Not all kimberlite contains commercial quantities of diamonds.

And my job is to find that pipe, lined with kimberlite, carrying diamonds.'

For instance, it occurs in uncommon mantle xenoliths, carried up by kimberlite.

The Finsch mine is a traditional diamantiferous kimberlite pipe, extending around 17.9ha.

This includes the Mwadui kimberlite pipe in the center of Tanzania.

Deeper workings encountered less altered rock, serpentinized kimberlite, which miners call blue ground.

Garnet-bearing harzburgite is much less common, found most commonly as xenoliths in kimberlite.

This finding was the first success in the search for kimberlite in Russia, after numerous failed expeditions of the 1940s and 1950s.

Eventually, he found the huge Orapa kimberlite.

"About the extent of the kimberlite deposits.

Among the rocks that commonly include peridotite xenoliths are basalt and kimberlite.

In reconnaissance for diamond mining, blue ground refers to a layer of non-oxidized kimberlite.

The Attawapiskat kimberlite field lies astride the river.

Xenoliths of peridotite are common in kimberlite and in some basalt.

There are also several unexplored kimberlite occurrences scattered over several kilometres.

This nation of mine will gamble a billion rand to find the next kimberlite in hopes that diamonds will be uncovered.