De Grey Mining Limited (ASX: DEG) has returned encouraging results from infill and extensional drilling at the Aquilla and Crow zones at its promising Hemi Gold Discovery in Western Australia’s Pilbara region.
The Aquila and Crow zones are located adjacent and to the north of the large Brolga intrusion at Hemi. Extensional step out drilling in these two zones continues at a nominal 80m x 80m spacing, and more recently, limited infill resource definition drilling has targeted drilling to a 40m x 80m spacing.
Technical Director, Andy Beckwith, said the infill drilling programme will continue over the coming months at all the Hemi zones to enable a robust resource estimate targeting a high level of JORC 2012 Indicated category resources. The initial Hemi resource estimate is planned for the middle of 2021.
Step out and infill drilling at Hemi is on-going and the latest results at Aquila and Crow continue to firm up areas of high grade gold mineralisation (+2g/t) within a much larger and broader gold system.
At Aquila, the western high grade plunging shoot has been extended a further 80m west and remains open to the west and down dip.
New potential lodes have been intersected along strike and down dip along the zone. These include a broad deeper zone of sulphide rich mineralisation.
A shallow broad zone of 68m @ 1.2g/t on an adjacent section also supports the continuity of mineralisation along this zone.
Significant new drilling results at Aquila (> 50gm*m) include: 38.4m @ 3.2g/t Au from 205.05m; 53m @ 1.2g/t Au from 165m; and 68m @ 1.2g/t Au from 136m.
At Crow, a cluster of high-grade results occur over a strike of approximately 240m. This zone correlates to an area of strong alteration and includes a previously reported intersection of 64m @ 13.4g/t Au from 141m.
Mr Beckwith said the zone is expected to contribute significantly to the overall resources. Infill drilling around this area has intersected further encouraging higher grade (+2g/t) mineralisation.
New potential lodes and extensions have also been intersected along strike and down dip within the Crow intrusion. Mineralisation continues to remain open at multiple localities. Significant new drilling results at Crow (> 50gm*m) include: 42.8m @ 2.8g/t Au from 234m (incl. 4.6m @ 14.1g/t Au from 250m); and 5m @ 72.9g/t Au from 105m (incl. 1m @ 358g/t Au from 105m).
The infill drilling at Crow continues to demonstrate strong gold endowment in potential new sub-vertical lodes,” Mr Beckwith said.
“The plunging high grade zone at Aquila continues to grow to the west and downdip toward Falcon. Mineralisation at Aquila and Crow has been intersected to approximately 500 vertical metres and remains open.”