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Gold/Mining/Energy : Trump's 12 Diamond Picks, Discussions Limited
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To: George J. Tromp who wrote (1326)10/9/1998 1:48:00 PM
From: VAUGHN  Read Replies (1) of 2251
 
You are welcome.

******

Tomato

Dykes can have multiple phase kimberlite emplacements just as pipes can. Witness the grade variance between the Sugarbird Blow and the Sugarbird dyke on SUF's Klipspringer property.

That is why investors should remain a little cautious about either very good or very bad initial drill results until multiple phases have been identified and separately drilled and evaluated.

In the case of the Leopard fissure at Klipspringer, the grade and stone quality is actually improving at depth which was never originally sampled in the mine development plan.

Poor quality glacial float could also be found down ice from a highly economic kimberlite just as the opposite can be true. Poor float can be sourced from an uneconomic emplacement phase. That is why you may have read that early pipe finds have since been redrilled and early geochemical sampling revisited by some of the players, to look at finer fractions. This was not well understood in the early days of the NWT diamond rush.

While micro/macro counts and geochemistry indicate strong probability, large bulk samples must be taken from all phases to truly ascertain the economics of each kimberlite.

The Zero Pipe in RSA I believe, is proof of that.

Regards
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