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Dart Mining scores copper-gold hits from combined drill campaign

Updated: Mar 21


Examples of mineralisation and alteration styles from Dart Mining’s drill campaign at its Granite Flat project. Credit: File

Dart Mining has returned positive copper and gold results from a combined 13-hole reverse-circulation (RC) and eight-hole diamond drilling campaign at its Granite Flat project in north-east Victoria.


Significant hits from the RC program include an 8m intersect grading 3.3 grams per tonne gold, 2.1g/t silver and 0.2 per cent copper from 61m, including a 1m slice at a solid 22g/t gold, 8.6g/t silver and 0.62 per cent copper. A second hole recorded a 7m section going 1.6g/t gold, 4.9g/t silver and a respectable 1.33 per cent copper from 45m.


Diamond drill highlights show a 0.49m section reading 7.93g/t gold, 7.7g/t silver and 3.85 per cent copper, with a second hole recording a 3.55m segment at 1.34g/t gold, 20.76g/t silver and 3.03 per cent copper. The diamond campaign also produced a massive 214m hit going 0.1g/t gold, 0.5g/t silver and 0.07 per cent copper from 39.84m.


Management says the preliminary diamond drill results indicate continuity of the main mineralisation channel, which now shows elevated gold, silver and copper levels along some 500m of strike extent. It adds that the RC results produced several significant intersections consistent with its interpretation of an intrusion-related copper-gold system at Granite Flat, causing the large soil anomaly.

These results from Dart Mining’s most recent RC and Diamond drilling programs at Granite Flat provide more evidence of the mineralisation style, and extent, of a bulk tonnage, intrusion-related copper-gold style mineralisation event. These drill programs have confirmed the presence of an extensive sheeted vein system that remains open to the south-east, north-west, and at depth, and focussed high-grade Au-Ag-Cu epithermal mineralisation across the project. Dart Mining chairman James Chirnside

The company says the RC program was designed to test the extent and nature of the large copper-gold soil anomaly at the core of Granite Flat, while the diamond drill campaign aimed to target narrow, high-grade gold-silver-copper mineralisation identified at surface along the strike extent of the historic Crawley’s Reef.


The operation is next to the Omeo Highway between the small towns of Mitta Mitta and Glen Wills, about 74km south-east of Albury-Wodonga and 360km north-east of Melbourne.


It is one of several projects Dart has compiled in the Lachlan Fold Belt in north-east Victoria from its extensive and diverse tenement portfolio comprising 6500 square kilometres. It says the Granite Flat area has great potential as a porphyry target and also contains high-grade copper-gold mineralised structures along north-west-oriented shears, making the area highly-prospective for lode-style gold, in addition to intrusion-related precious and base metals mineralisation.


In February, the company revealed that Granite Flat rock-chip samples had thrown up stellar figures of 42.9g/t gold and 27.9g/t gold. With additional results still to come from the company’s combined drill campaign, Dart – which also today revealed it had received firm commitments to raise $375,000 via a placement – is well on its way to establishing the mineralisation model at Granite Flat.


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