Barisan Gold Corporation has received final assays for two recently completed holes at its Upper Tengkereng gold-copper porphyry discovery in the Province of Aceh, North Sumatra. Both returned encouraging gold and copper results.
The first of these holes was a vertical hole drilled in the eastern part of the deposit to test the vertical extensions of the high-grade zone discovered in that area in three previous holes whereas the second hole was drilled in the southern portion of the deposit to test the newly discovered near-surface high-grade zone located in that area.
The latter is the best hole drilled so far at Upper Tengkereng, returning the highest grades intercepted over the entire length of a hole as well as the longest intercept above 1% copper equivalent of any hole drilled so far at Upper Tengkereng. As a whole, it returned 890 metres of 0.5 grams/tonnes gold plus 0.5% copper (0.8% copper equivalent at current market prices) 4 metres from surface to the bottom of the hole at 894 metres, including 506 metres @ 0.7 grams/tonne gold plus 0.6% copper (1.1% copper equivalent) from 188 metres to 694 metres.
Geological understanding of the near surface high-grade zone is advancing following receipt of the drill results and assays. Based on results so far, the zone seems to be approximately 700-800 metres depth starting from surface and contains three distinct types of mineralization stacked one on top of the other.
From surface to approximately 100 metres depth, there is the presence of a top layer of advanced argillic altered hydro breccia mineralization where grades average approximately 0.4-0.6% copper equivalent; from 100 to 400 metres depth, there is the presence of high-grade covellite rich silica-pyrophyllite-alunite mineralization where grades average 1.0-1.2% copper equivalent; and from 400 to 800 metres depth, there is the presence of high-grade chalcocite-chalcopyrite mineralization where grades average 0.7-1.0% copper equivalent.
Similarly, the first of these latest holes was the second best hole drilled so far at Upper Tengkereng, returning 824 metres @ 0.7 grams/tonne gold plus 0.3% copper (0.7% copper equivalent) 292 metres from surface to the bottom of the hole at 1116 metres, including 386 metres @ 0.8 grams/tonne gold plus 0.5% copper (1.0% copper equivalent) from 510 metres.
Drilling continued throughout the summer at Upper Tengkereng, save for the Idul Fitri holiday period in late July/early August. Two further holes have since been completed and another has recently started. Unfortunately one hole was abandoned.
Barisan Gold has refocused all its efforts on the near-surface high-grade zone located in the south-central part of the deposit. All resources (drilling, geology, human and financial) are being directed towards that area with a 12-month objective of producing a maiden mineral resource estimate in accordance with NI 43-101.
Initially, the focus will be on delineating the boundaries of the zone. Approximately 10 holes of various lengths and dips have been planned to delineate the east-west-north-south boundaries of the near-surface high-grade zone. At this stage, the zone remains open in all directions, except towards the southeast corner.
After having delineated the boundaries of the zone, resource drilling will commence, where at least 8-10 holes will be required, in addition to holes already drilled or being planned, depending on the final footprint of the zone. www.barisangold.com