Intrepid intersects additional copper-gold porphyry at E. Java prospect
Tuesday, May 25 2010 - 02:54 AM WIB
?This porphyry system continues to deliver broad intersections at very good grades and, importantly, the mineralisation is open laterally and at depth.? said CEO Brad Gordon. ?These latest drill results provide still more exciting evidence that the Tumpangpitu porphyry system shows significant potential in terms of both scale and grade.?
Hole GTD-10-146 was drilled within the main Tumpangpitu area, 200 metres from Hole GTD-10-139 (374 metres at 1.03g/t gold, 0.50% copper and 195ppm molybdenum). It is the eighth of a planned 13-diamond drill hole program at Tumpangpitu that will be used for an initial resource estimation of this portion of the porphyry system, in August 2010, to be reported under JORC and National Instrument 43-101 rules and guidelines, it said.
Additional follow-up drilling in 2010 will also test the zone of potential mineralisation between the main Tumpangpitu zone and underneath the Zone B oxide resource, 1.2km to the SE (hole GTD-137; 86m at 1.11g/t gold, 0.56% copper).
Zone B is one of several near surface areas of oxidized gold-silver mineralisation located above the deeper porphyry system. The oxide zones comprise an aggregate Inferred Resource estimate of 3.3 million ounces of gold-equivalent (approximately 100 million tonnes at 1.0 grams per tons gold equivalent at a 0.5 grams per ton gold equivalent cut-off).
The following plans show the holes drilled to date on the 5 sections of the main Tumpangpitu zone. Key assay intervals from these holes are shown on section. In many cases, drilling stopped in mineralisation due to the ~800 metre depth penetration limit of the previous drilling rigs. Two new rigs with depth capability of 1,200 metres are now on site. (kanti)