Aurumin Ltd (ASX:AUN) has started drilling at its 100%-owned Mt Dimer Gold Project 120 kilometres northeast of Southern Cross in Western Australia.
The company plans to complete about 2,500 metres of drilling in this program, which is expected to take about three weeks to complete, with assays to be received and interpreted around five weeks later.
Mt Dimer is a historical high-grade production centre, having produced in excess of 125,000 ounces of gold, including open pit and underground production of 600,000 tonnes at 6.4 g/t gold.
Drilling targets
Drilling will build on the previous successful drilling program at the existing Lighting, Golden Slipper and LO3 deposits as well as at new mineralised structures identified during recent sub-audio magnetic (SAM) survey target drilling, including Frodo North (T6), T12 and T24.
The company also plans to target a new prospect north of the Karli West open pit based on historical soil sampling and site mapping.
Historic high-grade deposits
Aurumin will begin drilling at Lightning deposit to follow up a potential new high-grade ore shoot that returned 4 metres at 4.39 g/t gold.
In the case of Golden Slipper, the focus is on previously identified high-grade ore shoots and the follow-up of recent drilling that returned 7 metres at 7.55 g/t.
Additionally, Aurumin’s LO3 program is designed to target the downdip continuation of high-grade ore shoots which were previously mined both in open pit and underground.
Newly identified prospects
At Frodo North drilling is designed to target extensions to mineralisation along the strike of the Frodo open pit and to follow up on a mineralised structure identified in two holes on a single drill line.
The T12 target was intersected by two reverse circulation (RC) holes on a single drill line testing for northerly trending structures identified using the SAM survey.
This structure occurs as a massive quartz vein with associated pyrite and limited quartz outcrop to the southeast of Golden Slipper and drilling aims to confirm the structure north and south of the outcrop and linking into other mineralisation.
Likewise, the T24 target was also intersected by two RC holes on a single drill line testing for northerly trending structures adjacent to the SAM survey and supported by soil geochemistry in Aurumin's March 2021 drilling program.
Lastly, the company will test for northerly trending mineralised structures within the Karli Northwest (T2) anomaly, along strike of Karli West with a drill line across the anticipated structure.