De Grey

Drilling extends mineralisation at De Grey’s Diucon and Eagle zones

De Grey Mining Limited (ASX: DEG) announced that the latest drilling has resulted in strong extensions to Diucon and Eagle zones within the Hemi gold discovery in Western Australia.

The company said that at Eagle, mineralisation was extended to approximately 600m strike, 300m depth, and remains open to the north, west, and at depth. New results on the two current western most sections at Eagle included 36m @ 6.9g/t Au from 40m and 52m @ 1.1g/t Au from 40m.

DEG said that at Diucon, mineralisation width was extended to approximately 200m with new lodes intersected across strike from the previously reported 121m @ 1.1g/t Au in HERC452. Diucon strike is currently approximately 900m and mineralisation remains open at depth and beneath sediments to the west. Significant new results at Diucon included 35m @ 2.0g/t Au from 83m and 20m @ 4.9g/t Au from 201m.

Hemi mineralisation now extends approximately 3.5km east-west from Brolga to Eagle. De Grey said that Diucon and Eagle demonstrate the potential to rapidly and cost effectively add to the gold endowment at Hemi.

Drilling at Diucon and Eagle zones

The company had commenced RC drilling at Eagle and Diucon zones within the Hemi discovery to determine overall scale along strike.

Diucon and Eagle are located immediately to the west of Crow and present a potential geological link between the Crow intrusion to Antwerp. The gold mineralisation shows similar alteration and sulphide development as seen at the adjacent deposits of Aquila, Brolga, Crow, and Falcon.

Strong extensions to Diucon and Eagle

DEG has now reported strong extensions to Diucon and Eagle zones from the RC drill results.

Eagle zone

De Grey said that at Eagle zone, broad zones of gold mineralisation continue to be defined as drilling advances to the west.

The company said that the strike at Eagle has been increased to approximately 600m and remains open to the west towards Antwerp. DEG said that the geological interpretation of the magnetic data and aircore drilling suggests the Eagle intrusion may also extend to the north, providing added potential.

De Grey reported that the recent drilling on section 28240E intersected a shallow zone of high-grade mineralisation including 36m @ 6.9g/t Au from only 40m downhole in HERC470, while Hole HERC462 intersected 52m @ 1.1g/t Au from 40m on section 28400E.

DEG said that hole HERC480 (assays pending) on section 28240E intersected another 50m of sulphide altered mineralisation approximately 80 vertical metres below HERC470 at the current known western extent of this lode. The company noted that depth extensions occur in hole HERC464 including 5m @ 1.8g/t Au and 14m @ 1.5g/t Au ending in mineralisation.

Diucon zone

DEG reported that the additional drilling results at Diucon were received from section 28880E and show three stacked sub-vertical lodes south of the ultramafic unit – Northern Diucon Lode, Central Diucon Lode, and Southern Diucon Lode. The company said that the multiple stacked lodes have not previously been defined along strike and further drilling will be required to test the potential to extend these along strike.

Significant results include: Northern Diucon Lode 10m @ 1.7g/t Au from 212m in and 25m @ 1.1g/t Au from 256m in HERC453; and 121m @ 1.1g/t Au in HERC452 (previously reported); Central Diucon Lode: 4m @ 2.7g/t from 93m in HERC453 and 13m @ 1.2g/t Au from 180m, 5m @ 1.3g/t Au from 198m, 6m @ 1.1g/t Au from 212m and 13m @ 1.8g/t Au from 226m in HERC458 within an overall interval of 72m @ 0.8g/t Au from 180m; and Southern Diucon Lode: 35m @ 2.0g/t Au from 83m in HERC458 and 20m @ 4.9g/t Au from 201m and 3m @ 1.9g/t Au from 240m in HERC460.

What’s next?

The company said that RC and diamond drilling on 160m x 80m step-outs to extend mineralisation along strike and at depth is currently underway. DEG said that infill to 80m x 80m is also planned to commence during the quarter.

De Grey reported that follow up aircore drilling will be undertaken to test for strike extensions to mineralisation. The company said that the programs of follow up RC and diamond drilling aimed at extending resources at depth and laterally are underway.

Management statements

De Grey Managing Director, Glenn Jardine said: “Diucon and Eagle potentially represent another step change to the gold endowment at Hemi. Both zones remain open along strike and at depth.

RC drilling is currently on 160m spaced sections and 80m spaced collars on section. We have demonstrated 900m and 600m strike lengths respectively at Diucon and Eagle with significant grades and widths downhole. Mineralisation remains open along strike and at depth with multiple stacked lodes in places. RC drilling to determine overall scale along strike continues and diamond drilling of potential down dip extensions is expected to commence during the quarter.”

Image Source: De Grey Mining Limited

Written By Jonathan Norris
Jonathan is a founder of and has been covering the resources industry since 2018. With over 17 years experience in print, broadcast and online media, Jonathan has seen first hand the transformative effect of online niche media.