Peregrine Diamonds Ltd. PGDIF

RE:RE:Question for XDeBeers

[xDeBeers]

Most pipes, but not all, are variable in their diamond distribution. There are quite a few different rock types (facies) within a kimberlite.
Tuffaceous (=crater facies), Hyperbyssal (~fresh) are the main types, and there are a few others.
There can also be different phases = pulses of magma that have different diamond content.
The cooling rate of each rock type is important. The faster the better since diamonds are not resorbed (=melted). Thus if it hit ground water is important.
This all used to be explained by kimberlite specialists with unique terminology, but more and more, volcanologist are running the show and defining standardised terms -as they should. Kimberlites are just volcanoes, they do not need special terminology.