De Grey’s recent drilling has proven beyond a shadow of a doubt that there is still plenty of gold to be found along the Greater Hemi corridor in the Pilbara.

Significant new results from continued aircore drilling along the Antwerp trend include an eye-popping 2m intersection grading 261 grams per tonne (g/t) gold from a down-hole depth of 36m (HEAC920) backed by other hits of 1m at 41.6g/t gold from 59m (HAC654) and 3m at 2.7g/t gold from 57m (HAC349).

Adding further support for what De Grey Mining (ASX:DEG) believes could be a new, large-scale surface intrusion are first pass reverse circulation drill results such as 6m at 4.4g/t gold from 28m (HMRC197) and 6m at 2.1g/t gold from 43m (HMRC167).

If that wasn’t enough, aircore drilling at the Frillback prospect northwest of Eagle has also intersected anomalous gold mineralisation with limited follow-up RC drilling returning a 6m strike at 2.1g/t gold from 43m (HMRC167).

Getting Technical

“Recent aircore and RC drilling has identified new prospective altered intrusions, anomalous gold zones and areas of encouraging multi-element geochemistry within the 15km long by 10km wide Greater Hemi Corridor, east and west of the existing deposits at Hemi,” technical director Andy Beckwith said.

“The discovery and recent growth of the Diucon and Eagle deposits, below an area of relatively weak aircore geochemistry results, provides encouragement with these new results that further gold mineralisation will be discovered along the Greater Hemi Corridor as drilling progresses.

“Infill aircore and deeper RC drilling will be undertaken based on ranked priorities and completion of heritage surveys. RC drilling will recommence in the New Year at Antwerp, to the west of Diucon and Eagle, to better test this prospective trend.”

Greater Hemi and Antwerp

Greater Hemi is a 15km long by 10km wide structural corridor which extends east and west of the main, play-opening Hemi deposits.

It contains numerous gold anomalies in drilling and hosts large scale deep seated regional structures and multiple intrusions – similar to those known to host mineralisation at Hemi – that have been identified by logging and bottom of hole multi-element geochemistry.

Exploration at Antwerp, located less than 1km to the southwest of Eagle, has highlighted a 1km long anomalous gold trend that the company believes could deliver new resources close to its existing 8.5Moz Hemi resource, which includes a 5.1Moz Ore Reserve.

Infill RC and diamond drilling to assess the potential of this trend will begin from the first quarter of 2023.

Meanwhile, a thorough geological and geochemical assessment of Frillback is ongoing and follow-up RC and diamond drilling will be planned to evaluate high-priority targets in early 2023.

De Grey added that the current focus on completing requirements for the DFS, including geotechnical, metallurgical and resource definition drilling will shift to resource extensions at Hemi and Regional deposits and exploration for new, large scale, near surface discoveries within Greater Hemi and regionally in early 2023.




This article was developed in collaboration with De Grey Mining, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.