RE: Just seen the newsRead the news releases TOCAT, The source rock is eclogite....which is also the source rock of the diamonds found in kimberlite and lamprolite.
Eclogite is formed between the mantle and the crust of the earth. When magma flows through the eclogite it may pick up diamonds on the way through before erupting on the surface. when the magma solidifies it forms kimberlite or lamprolite.
They have announced that it is eclogite and not alluvial...2.5 Billion years ago there must have been some huge geological upheaval, meteorite etc. whihc caused the eclogite to come to surface.
As this is classified as source rock and not alluvial, the potential is huge, massive etc...
Feel free to correct me if aI am wrong as this was DD on my part. I am not a geologist....