Officials at PNG Gold have announced final gold and silver assay results from 54 diamond drill holes at the Imwauna Main Structure and completion of an exploration program of surface geological mapping, trenching and diamond drilling on the Sehulea Project.
Results included 29.35 grams/tonne gold and 68.15 grams/tonne silver over 5.2 metres with diamond drilling testing Imwauna to 400 metres below surface. Gold mineralization is related to epithermal quartz veining which varies in thickness throughout. Higher-grade, gold mineralization, meanwhile, occurs in areas of greater quartz vein concentration while demonstrating multiple hydraulic brecciation pulses.
One drill rig was mobilized to test epithermal style gold mineralization on Sehulea on Normanby Island. The program conducted a systematic study of the Weioko and Lantaona Hill low sulphidation epithermal gold systems at Sehulea.
This included geological mapping of 5sqkm and covered Weioko and Lantaona Hill prospects. A total of 364 rock (16 grab and 348 continuous chip) samples were collected. In addition, excavator trenching occurred along the southern extension of the Weioko gold-silver deposit with 250 samples collected at a 1 metre per sample interval along the trench. The program overlaid an area where previous drilling met gold-silver mineralized with intersections of up to 66 metres of 1.44 grams/tonne gold and 7.48 grams/tonne silver, starting at surface.
Three HQ size diamond drill holes for a total of 558.7 metres tested the 3D-IP anomalies completed at Lantaona Hill prospect by SJ Geophysics in late 2011. Lantaona Hill is a low sulphidation, epithermal gold-silver occurrence with disseminated pyrite/arsenopyrite. A positive correlation between sulphide and gold/silver concentrations was noted from previous work. This disseminated and fracture-controlled sulphide mineralization was in all three holes. Assays are pending.
The Imwauna exploration licence lies to the north of Normanby Island, 80km northeast of Alotau, provincial capital of Milne Bay province in eastern Papua New Guinea. The project consists of two main prospects, Imwauna and Kelas, with numerous untested prospects. The gold deposit is a high-grade, near-surface, low-sulphidation, epithermal vein gold system. Mineralization ranges from 0.5 metres to 6.0 metres in the Imwauna Main structure, and the prospect remains open in the north and south at strike and at depth.