Southern Gold Ltd (ASX:SAU) has extended a diamond drilling program at the Aphae project in South Korea after mineralised breccia was intersected in all three holes.
A wider than expected interval of sulphide-rich breccia zone in hole APDD003 has resulted in a fourth diamond hole being drilled targeting down dip of this zone.
All three diamond drill holes completed intersected significant sulphide + silica flooded vein breccia and base metal sulphide veining and assays are pending.
The company is also continuing drilling at the Deokon projects in South Korea while assays are expected from drilling program at Spider prospect of the Beopseongpo project in early July.
Drilling “geologically exciting”
Managing director Simon Mitchell said: “Testing new and multiple targets simultaneously, such as the current drilling at the Aphae and Deokon projects, is geologically exciting and increases our chances of discovery.
“While the drill program at Hand of Faith [Beopseongpo project] was successful in intersecting epithermal veining in drill core, the tenor of gold results was lower than expected.
“However, we have been pleasantly surprised by the extent of the mineralised breccia we have seen in drill core at Aphae, particularly in APDD003.
“That’s the nature of mineral exploration - prepare to be surprised!”
A total of 506.4 metres across three holes have been drilled at Aphae, with a fourth now underway.
The initial hole APDD001 intersected the targeted sulphide-quartz breccia mineralisation at the expected depth below the historical open pit and underground mine.
This was extended to the south with APDD002, but more importantly was also extended to the north in APDD003, where the width of the breccia zone and sulphide content increased.
The style of mineralisation at Aphae is different to what is seen at many of Southern Gold’s projects which are largely low-sulphidation epithermal vein systems.
Although it is at an early stage of exploration at Aphae, the currently postulated genetic model is that of a hydrothermally mineralised breccia pipe.
This deposit type can have a relatively constrained surface footprint but significant depth extent, in some cases approaching one kilometre, and can, therefore, have significant precious metal endowment.
Mineralised intervals at Aphae are being logged and sampled as a matter of priority.
Subject to logistical transport issues due to COVID-19, the assays are expected back from this program in around 6-8 weeks.
Scout drilling is ongoing at Shin Hill prospect at the Deokon project with DKDD007 complete and DKDD008 commenced.
Hole DKDD008 is planned to test down-dip of the well-focused vein and lode mineralisation observed in the Shin Adit historical underground workings.
A more detailed update will be provided on this program on completion of the drilling and receipt of all assays, expected in late August.
Next stage of drilling
Regulatory approvals for drilling at depth at the Weolyu project are well advanced and is the next planned drill site, subject to suitable drill rig access and the availability of suitable equipment.
It is intended to either drill the five-hole program at the Dokcheon project or conduct more drilling at Aphae or Deokon pending timing and significance of assay results expected over the next two months.