De Grey Mining Limited (ASX: DEG) has had further drilling success at its attention grabbing Hemi gold discovery in the Pilbara Region of Western Australia.
The company’s Technical Director, Andy Beckwith, said the Hemi had provided further quality gold assay results and further encouraging sulphide mineralisation has been observed over large widths and depths at the Brolga and Aquila Zones with the Hemi area.
“Brolga and Aquila are developing into two very large gold systems with widths of gold mineralisation never seen before in the project area nor the Pilbara region,” Mr Beckwith said.
“The ongoing RC and diamond drilling programme aims to scope the overall scale of the mineralisation on 80m spaced sections.
The large anomalous gold area to the north of Aquila is now our focus for aircore drilling. Anomalous gold occurs in every hole above the interpreted intrusion in earlier wide spaced aircore drilling and provides scope for further new parallel discoveries.”
DeGrey reported that extensive sulphide mineralisation is now identified in RC and diamond drilling over +240m of strike length with additional strike potential highlighted by encouraging aircore gold results and observations along strike over approximately 600m.
The company said the overall scale of the Brolga Zone remains open in all directions. Mineralisation is hosted in a large multi-phase intrusion.
The current dimensions of the Brolga Zone defined only by RC and diamond drilling are: +240m strike x up to 200m wide x 220m below surface and remains open.
Mr Beckwith said RC and diamond drilling continues to test the scale of the deposit on 80m spaced sections and nominal 80m spaced holes on section. The aim is to first define the lateral limits of the mineralisation and depth extensions to an initial nominal 400m vertical metres prior to commencing infill resource drilling.
RC drilling results for holes on section 30,640E continue to confirm substantial thicknesses of gold mineralisation associated with the extensive sulphide rich mineralisation. The strong and wide gold mineralisation has now been defined in all RC holes where observed sulphide mineralisation was logged.
Additional RC gold results include:
- 43m @ 1.9g/t Au from 99m; including 6m @ 4.3g/t Au and 4m @ 5g/t Au)
- 36m @ 3.2g/t Au from 156m; including 14m @ 5.6g/t Au)
- 43m @ 1.9g/t Au from 34m, including 6m @ 6.9g/t Au); and
- 54m @ 2.2g/t Au from 42m, including 5m @ 6g/t Au)