De Grey’s drilling doesn’t skip a beat with new high-grade gold extensions at Aquila
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Special Report: De Grey has uncovered more broad, high-grade extensions at the Hemi gold discovery – including an eyewatering 41m grading 6.8g/t.
Drilling by De Grey Mining (ASX:DEG) at its red hot Hemi discovery has extended the Aquila zone 80m to the east and delivered significant depth extensions.
Broad, high-grade hits included 41m at 6.8 grams per tonne (g/t) gold from 181m, including 14m at 10g/t from 206m — with the hole ending in mineralisation.
This zone of high-grade gold remains open at depth and along strike to the east, meaning De Grey still hasn’t hit the edges of this large structure.
“At Aquila, we still have not reached the limits of mineralisation,” technical director Andy Beckwith said.
“Step out drilling shows we are still in strong broad and high-grade mineralisation along the length of the deposit.”
Meanwhile, significant depth extensions from recent drilling included 69.5m at 1.3g/t from 80m and 30m at 1.7g/t from 125m.
Two of the reverse circulation holes were drilled to confirm the original high-grade discovery aircore results so they can be included in an updated resource.
Aquila is a parallel gold-sulphide zone located to the immediate north of the Brolga zone and adjacent to the new Crow zone to the north.
De Grey has three drill rigs spinning at its Hemi discovery, located about 60km of Port Hedland in WA, testing for extensions at the Aquila, Brolga and Crow zones.
The company now plans to undertake deeper reverse circulation (RC) and diamond drilling to target about 100m below mineralisation as well as further extensions along strike.
De Grey is also doubling down on its drilling efforts, increasing the number of rigs on site to six. The new rigs will be onsite in the next 10 days.
“We announced on Friday that we would be increasing the number of aircore and RC rigs on site,” Beckwith said.
“This will allow us to expand aircore drilling coverage immediately around Hemi and at the other nearby intrusions including Scooby, Shaggy and Antwerp.
“The additional RC rig will allow us to follow up the positive aircore results that are extending mineralisation and to continue defining known mineralisation.”
Wide spaced aircore drilling is currently advancing to the west of Aquila.
Beckwith said the drilling had intersected “encouraging” alteration about 500m to the west of Aquila that appeared similar to the alteration at Aquila.
Hemi was one of 2019’s major new gold discoveries and De Grey says it is shaping up as a world class, large-scale deposit.
It was discovered in mid-December 2019 under a shallow ‘blanket’ of transported cover.
This has opened up a new style of mineralisation in Western Australia’s Pilbara region that had not been uncovered before.
De Grey has already defined a 2.2-million-ounce resource at the broader Mallina project, but the new Hemi discovery points to a large and highly prospective gold province that could yield much bigger multi-million-ounce gold deposits.