Heron Resources Limited has commenced the next phase of drilling targeting the Lisa Lens at its wholly-owned Woodlawn Zinc-Copper Project, located 250km south-west of Sydney, New South Wales, Australia. The initial discovery of Lisa Lens returned a number of significant drill intercepts and represents mineralisation which could potentially be accessed in the important first two-years of the underground mining operation. The drilling rig and crew have been mobilised, and it is expected that the program will be completed within two months’ time.
Commenting on this program, Heron Resources Managing Director and CEO, Mr Wayne Taylor, said:
“The program represents an important component of the Woodlawn mine development with this area having the potential to be accessed early in the mine schedule. The Lisa Lens demonstrates that relatively shallow (200m depth), high value mineralisation could be brought forward into the mine plan, enhancing the project economics. The staged exploration approach that we have adopted will see some lens positions more optimally drilled from underground; other shallow positions such as Lisa Lens can be being drilled from surface, now. The mine plan is currently being updated with the new G2 mineralisation defined by drilling in 2017and will be reviewed and further updated as the Lisa Lens results are received in the coming months. Subject to results, additional drilling will be planned to further extend Lisa Lens and other open positions. Lisa Lens is an obvious example of the strong in-mine exploration and discovery potential that remains at Woodlawn with multiple additional targets being identified by the Company’s geological team.”
Lisa Lens Drilling
The Lisa Lens is located adjacent to the I Lens in the upper-most ore horizon within the Woodlawn system (Figure 1). Discovered by Heron in 2015, the lens is typical of the high-grade polymetallic massive sulphide type found at Woodlawn, and is located 80 meters from the planned route of the decline, 200-250 m below the surface. A copper-dominated zone also occurs on the southern margin of the lens, which is typical for Woodlawn, and may provide additional economic value. Previous drilling by Heron targeting this area returned significant drill intercepts including:
o 12.4m @ 20% ZnEq1 from 222m (12% Zn, 1.6% Cu, 2.0% Pb, 0.7g/t Au, 23g/t Ag), WNDD0104
– Including 9.5m @ 26% ZnEq from 223m (16% Zn, 1.7% Cu, 2.7% Pb, 0.68g/t Au, 28g/t Ag)
o 4.2m @ 28% ZnEq from 242m (17.7% Zn, 1.6% Cu, 5.0% Pb, 1.1g/t Au, 28g/t Ag), WNDD0015
Earlier historical mineralised results from the southern portion of the lens include:
o 4.2m @ 15.1% ZnEq from 266m depth (4.9% Zn, 2.8% Cu, 2.3% Pb, 0.8g/t Au and 25g/t Ag), W089
o 8.0m @ 6.3% ZnEq from 234m depth (1.9% Cu, 8.3g/t Ag), W145
The planned program will consist of approximately 2,000 m of diamond drilling.
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