Brisbane, Dec 10, 2007 AEST (ABN Newswire) - The Board of Republic Gold ("Republic" or the "Company") (ASX:RAU) today announces that it has received the second batch of analysis results from the recently completed drilling programme at the 75%-owned Burraga Copper Project that is located in mineral-rich Central New South Wales.
The results confirm the potential for a large scale body of mineralisation at Burraga.
These new analysis results are for part of drillholes RCR-002, RCR-004, RCR-005 and RCR-006. The initial analyses reported last month indicated copper mineralisation as copper bearing chalcopyrite, associated with lead and zinc sulphides, demonstrating that Burraga is a polymetallic deposit. These latest results confirm the initial results.
Managing Director of Republic Gold, Mr John Kelly said "The importance of these results is that we now see both limbs of the syncline proposed as part of the geological model for Burraga as being mineralised with a range of base and precious metals. This has very important ramifications for the proposition that the mineralised surface expression we see at Burraga is a solid indication of a much larger and mineralised intrusive body at depth. The potential for a large scale body of mineralisation at Burraga is very real."
Figure 1 below shows the postulated geological model for Burraga.
As was the case with the earlier analysis results received, the new results show that now all the drillholes are variously mineralised over nearly the entire lengths sampled. Whilst many of these grades are marginally economic, these results do point to there being a significant mineralising system at Burraga. The presence of intrusive porphyries was noted in the drillhole logs. The RC pre-collar of RCR-004 was drilled through mineralised porphyry and then the diamond tail of this hole has been drilled through the same porphyry unit and it is mineralised as well. This is strengthening the proposition that the mineralisation could be related to a larger, deeper seated, unroofed intrusive mineralising system at depth.
Further analysis results are still awaited.
As noted above, Burraga is a large target. The main historic producing mine, the Lloyd's Mine, sits in the centre of the 4 kilometres of strike and was mined as a shoot over a down plunge length of approximately 550 metres. The high grade vein that was mined varied in width from 0.5 to 3 metres. This was contained within a lower grade zone up to 20 metres wide, defined by drilling in the 1980s and earlier. The results of the new drilling have significantly extended the dimensions of this lower grade zone, with low grade lead and zinc results particularly extending right from the surface to the top of the old mine workings. The other main producer at Burraga was the Sprague's Mine, which now has one successful drillhole in it.
A total of 1,379 metres in 11 holes, comprising 787 metres of RC and 592 metres of diamond drilling was completed in the programme. Drilling intersections quoted are all downhole widths, which in general are targeted to intersect mineralised zones at angles of greater than 30Deg. that is approaching perpendicular as far as practicable.
These initial results are sufficiently encouraging that a Stage 2 drilling programme is to be planned following the receipt of the remaining analysis results. The table below shows the details of the Burraga drilling programme to-date.
The Burraga exploration licence is owned in partnership with Republic's 25% joint venturer, Astor Consultants Pty Limited.
Drilling in Far North Queensland Drilling has been completed at the 100%-owned Tregoora Gold Project.
Burraga Drilling Details FIGURE.1.
--------------------------------------------------------------------------Drill LENGTHHole RC DD Comments--------------------------------------------------------------------------RCR001A 0 4.0 Drillhole was vertical and was abandoned after drilling difficulties. No samples were taken.--------------------------------------------------------------------------RCR001 0 22.1 Drillhole was vertical and was abandoned after drilling difficulties.B 2.45 metres at 0.04% Cu, 0.19% Pb, 0.91% Zn, 2.6 g/t Ag from 14.0 metres--------------------------------------------------------------------------RCR001C 0 69.6 Drillhole was vertical and was abandoned in the old Lloyd's Mine workings. 0.7 metres at 0.10% Cu, 0.14% Pb, 1.43% Zn, 2.6 g/t Ag from 16.85 metres 1.45 metres at 0.40% Cu, 0.56% Pb, 0.62% Zn, 10.7 g/t Ag & 0.05 g/t Au from 23.85 metres 0.9 metres at 1.87% Cu, 0.97% Pb, 1.51% Zn, 41.2 g/t Ag & 0.13 g/t Au from 27.4 metres 0.6 metres at 0.73% Cu, 0.10% Pb, 0.19% Zn, 10.8 g/t Ag & 0.08 g/t Au from 32.60 metres 0.30 metres at 4.36% Cu, 0.24% Pb, 0.32% Zn, 39.3 g/t Ag & 0.38 g/t Au from 42.90 metres 18.80 metres at 0.19% Zn from 42.00 metres 4.3 metres at 0.68% Cu, 0.03% Pb, 0.14% Zn, 4.3 g/t Ag & 0.07 g/t Au from 65.0 metres. End of Hole.--------------------------------------------------------------------------RCR002 0 135.4 Drillhole was vertical. 12.0 metres at 0.34% Zn, including analysis results up to 0.61% Cu, 0.41% Pb & 8.7 g/t Ag from 4.7 metres Results for samples below 61 metres are awaited. Additional sampling from 17 to 27 metres is required.--------------------------------------------------------------------------RCR003 0 180.3 Results are awaited.--------------------------------------------------------------------------RCR004 150 21.3 Hole was drilled at -60Deg. to the west. 150.0 metres at 0.02% Cu, 0.01% Pb, 0.03% Zn & 0.4 g/t Ag from surface 2.0 metres at 0.63% Cu from 44.0 metres 2.0 metres at 0.48% Zn & 6.3 g/t Ag from 136.0 metres 4.0 metres at 0.30% Zn, 0.22% Pb & 5.2 g/t Ag from 160.0 metres--------------------------------------------------------------------------RCR005 144 0 Hole was drilled at -60Deg. to the west. 14.0 metres at 0.50% Cu & 3.3 g/t Ag from 124.0 metres, including 10.0 metres at 0.55% Cu, 0.11% Zn and 3.8 g/f Ag, 0.06 g/t Au from 126 metres Results for 0 to 120 metres are awaited.--------------------------------------------------------------------------RCR006 97 104.0 Hole was drilled at -55Deg. to the east. 10.0 metres at 0.38% Cu & 3.4 g/t Ag from 62.0 metres Results for 98 to 182 metres are awaited, with visible base metals mineralisation logged.--------------------------------------------------------------------------RCR008 96 54.8 Results are awaited.--------------------------------------------------------------------------RCR009 150 0 Results are awaited.--------------------------------------------------------------------------RCR010 150 0 Drillhole abandoned, off target.--------------------------------------------------------------------------Total 787 591.5
JORC Code Compliance Statement
Information in this report that relates to Exploration Results is based on information compiled by Mr Chris Roberts and Mr John Kelly, who are all members of the Australasian Institute of Mining and Metallurgy. Mr Kelly is a director of the Company and Mr Roberts is the Chief Geologist of the Company and have a minimum of five years experience relevant to the style of mineralisation and type of deposit under consideration and to the activity undertaken to qualify as Competent Persons as defined in the 2004 Edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Roberts and Mr Kelly consent to the inclusion in this report of the matters based on information provided by them and in the form and context in which it appears.
Contact
Greg Barns on 0419 691 846
John Kelly on 0418 577 759
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