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De Grey Mining confirms further gold extensions at Brolga zone within growing Hemi discovery

New large gold zones to the south and west of Brolga in shallow aircore drilling highlight the potential for Hemi to grow.

De Grey Mining Limited - De Grey Mining confirms further extensions at the Brolga zone within the Hemi Gold discovery
Hemi is around 60 kilometres south of Port Hedland in Western Australia

De Grey Mining Limited (ASX:DEG) continues to expand gold endowment at the Hemi discovery in WA's Pilbara region with drilling still to define the limits of mineralisation.

Extensional reverse circulation (RC) and diamond drilling continue to define strong gold mineralisation at the Brolga Zone with results including:

  • 26.9 metres at 1.5 g/t from 269 metres;
  • 19 metres at 2.7 g/t from 203 metres, including 3 metres at 14.7 g/t from 203 metres;
  • 16 metres at 1.2 g/t from 202 metres;
  • 16.3 metres at 1.1 g/t from 214 metres; and
  • 8 metres at 2.6 g/t from 40 metres.

New shallow aircore results potentially extend Brolga 160 metres to the west with results of 16 metres at 1.9 g/t from 48 metres while initial RC drilling has defined shallow gold mineralisation to the south.

Results here include 5 metres at 1.1 g/t from 59 metres and 15 metres at 1.1 g/t from 223 metres.

“Potential to expand”

De Grey technical director Andy Beckwith said: “The potential for Brolga to expand continues to grow with an 80-metre x 80-metre RC program underway at Brolga (South) and Crow.

“At Crow, the initial program of 160 metres x 80 metres spaced RC drilling has recently been completed with results expected in the coming weeks.

“Diamond drilling is currently focused on depth extensions beneath Aquila.

“Two RC rigs and two diamond rigs are operating at Hemi and two aircore rigs are advancing at Scooby and Antwerp prospect areas.”

The planned RC drilling is expected to be completed during July with aircore drilling to be completed during the September quarter.

Drilling location plan showing maximum gold in aircore drilling and significant new RC and diamond drilling results at Brolga

Drilling strategy

The company’s next 12-month drilling strategy involves:

  • Expanding resources at Hemi, initially on 80 metres x 80 metres drill spacing to define inferred resources and then infill drilling to define indicated resources;
  • Aircore drilling for new discoveries along the greater Hemi corridor; and
  • Testing the many structural and new intrusion targets elsewhere within the 150 kilometres long Mallina Gold Project.

Additionally, the recently completed airborne magnetic survey has been reviewed and provides at least four new clusters with at least 16 individual new intrusion targets within the greater Hemi corridor.

This review also assessed the previously flown magnetic surveys elsewhere along the 150-kilometre project area and generated over 20 new targets that warrant further investigation.

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De Grey Mining's Hemi discovery 'getting bigger and bigger' as drilling advances

De Grey Mining Limited's (ASX:DEG) exploration manager Phil Tornatora speaks to Proactive London's Andrew Scott soon after releasing updated drilling results for the Brolga Zone within the project in Western Australia. The latest RC drilling results at the Brolga Zone has defined strong gold...

on 27/3/20

2 min read