Olympus Pacific Minerals has received positive results from surface trenching within the Bau Central Project in Sarawak, East Malaysia. The program has confirmed outcrop grades and extended resource boundaries.
Trenching has recently been completed at several sites along the 17km-long Bau Central gold trend with the objective of confirming surface gold grades above known sub-surface mineralized zones and expanding resource potential within the areas being tested by the current 25,000 metre drilling program.
At the Jugan open pit Olympus recently completed 673 metres of trenching in seven trenches to confirm historic trench results and both in-fill and expand the surface expression of gold mineralization. The Jugan deposit outcrops as a low hill to the northern end of the Bau gold trend.
Trenches range in length between 50 and 120 metres, over an approximate 350 metre strike length. Results include 41.35 metres @ 3.47 grams/tonne gold and 16.25 metres @ 4.18 grams/tonne in one trench; 42.00 metres @ 1.17 grams/tonne in another; 39.00 metres @ 1.74 grams/tonne, 27.70 metres @ 1.71 grams/tonne and 103.00 metres @ 1.30 grams/tonne; and 33.60 metres @ 1.87 grams/tonne in another.
These results have revealed that surface ore grade gold mineralization at Jugan is more widely spread than earlier thought and locally extends beyond currently modelled resource boundaries. They have also confirmed a higher grade zone at the western end of the deposit.
At 0.75 grams/tonne grade cut-off, Jugan has a current indicated NI 43-101/JORC resource of 10.963 million tonnes @ 1.60 grams/tonne for 563,000 ounces of gold. The deposit has to date been modelled to 70 metres depth but currently remains open both laterally and at depth.
Further, exploration to expand the resource is in progress. 3D analysis of prior drilling results combined with modelling of reprocessed airborne DIGHEM data, has revealed several deeper zones of resistivity that are yet to be closed off by drilling. These are interpreted as potentially gold mineralized feeder zones, which may extend to depth.
DIGHEM analysis has also revealed several anomalies beyond the known resource, with geophysical signatures analogous to the Jugan deposit. This highlights the potential for additional discoveries to be made within this sector of the Bau gold trend.
At the Taiton sector Olympus completed 564 metres in 12 trenches to test the surface gold grades associated with mineralized intrusives and their contact zones within limestone. The trenches vary in length from 12 to 111 metres.
This sector contains several potential mining areas and lies within the Bau trend about 13km to the south of Jugan.
Results include 8.00 metres @ 1.46 grams/tonne gold, 6.00 metres @ 1.30 grams/tonne, 7.00 metres @ 1.92 grams/tonne, 6.00 metres @ 2.19 grams/tonne and 7.00 metres @ 11.84 grams/tonne.
These results confirm that significant surface gold grades are associated with the intrusives and that the contact zones between the intrusives and limestone host rocks constitute viable resource targets.