In terms of diamond stats, here is a write-up that was offered on this thread a while back-- very nice to read as these kinds of facts are hard to find in the diamond industry. It's such a secretive (usually) business. Rick Boulay has certainly been helpful in overcoming that element!
Here's the discussion (enjoy):
techstocks.com
-- Re. the distribution of economic diamond pipes
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WRT your question on having to drill many holes, I think you hit on it, except, in the reverse. Because the same host-rock strata has been identified across at least three separate targets, it will be much easier to establish as a constant. It lies flat, near-surface, & relatively undisturbed, it appears. Much easier, reliable, & cheaper to establish/ delineate or outline because of this.
This is from the last MMU NR:
"..The topmost pyroclastic unit encountered in Targets 7, 7-D and 9
are considered to be stratigraphically equivalent due to their
virtually identical internal stratigraphic structure. That is, the P-1
Sequence has been identified at precisely the same elevation in
the three targets. Targets 7 and 7-D are 600 metres apart and
both are located approximately 13 km from Target 9. All three
targets are on elevated ground and the P-1 Sequence is projected
to outcrop around the periphery of the Naylor Hills, the
dominant topographical feature of the area. P-1 is flat lying and
its elevation is now precisely known. A preliminary calculation,
using an average thickness assumption of 7 metres, suggests that
a very conservatively estimated minimum of 600 million tonnes
of P-1 Sequence material is available for surface sampling on the
joint venture permits. A significantly larger tonnage of P-1
Sequence material can be projected to be available at nominally
higher rock strip ratios. In other words, based on recent drill
intercepts and the results of previous sampling programs, the P-1
Sequence is a flat-lying volcanic, possibly kimberlitic, layer
between 5 and 10 metres thick and is projected to outcrop along
the edges of the Naylor Hills in a band varying between 300
metres and one kilometre wide, covering a conservatively
estimated area of 30 square kilometres without any rock cover
and with virtually no overburden."
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-- I am sure Rick will be happy to properly answer this.
[bear in mind that my comments are of a novice!]
I will post it if/when he does. Right now I am out the door for a bit.
Long weekend kids!
Cheerio,
-j
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