“It would be possible, even easy, to drill into the middle of an Orapa type of exploration target and walk away from it without knowing it was a kimberlitic, high grade, massive tonnage, layered diamond deposit.”
To quote Richard - see statement at this location:
exchange2000.com
This is from the previous location -
layfieldresources.com
(again, see “complete report”)
“In the first instance, the classic example is that of Orapa Mine in northern Botswana, from which more that 100 million carats have been mined from exclusively crater facies rock types since 1971. A closer, more detailed inspection of the crater rims and floors indicates a diverse array of high grade, but discontinuous ore types mixed with relatively low grade but massive fine grained and coarse kimberlitic shales and sandstones.
If, at Orapa, conventional prospecting and evaluation techniques had been used to define the deposit such as a widely spaced drilling programme, neither the correct understanding of the geological model nor the economic potential of the ore body would have been realised. For the above reasons, and De Beers recognition of the geology, the Orapa kimberlite, A/KI, was originally pitted on a 30m square gridover 120 hectares.”
In case you missed it the first time!
Thanks, Violetta. I hope so too!
Larry Meneely
|
