- De Grey Mining (DEG) has received positive results from initial metallurgical testwork at its Hemi gold deposit in Western Australia
- Metallurgical work is currently underway at the Brolga discovery on samples collected from reverse circulation and diamond holes
- The reverse circulation holes returned an average gold recovery of 93 per cent while the diamond holes had an overall recovery of 96.3 per cent
- An additional six holes have been drilled to provide larger volume samples and are currently being sampled
- Results from this program are expected in the September quarter and results will provide a detailed assessment of the deposit
- De Grey is up a slight 1.63 per cent on the market today and shares are trading for 93.5 cents each
De Grey Mining (DEG) has received positive results from initial metallurgical testwork at the Hemi gold deposit in Western Australia.
Work was completed by ALS Metallurgy with input from the company’s technical team.
Metallurgical work is currently underway at the Brolga discovery on samples collected from reverse circulation (RC) and diamond holes.
Twelve samples of oxide mineralisation were taken from RC holes Brolga with each sample tested using carbon in leach (CIL) testwork.
These samples presented a range of mineralisation including sediments, intermediate intrusive, and mafic intrusive.
Gold grades ranged between 0.1g/t and 4.1g/t and had an average of 1.5g/t gold, while recovery ranged between 85 per cent and 98 per cent at an average of 93 per cent.
A sample was then taken from across two diamond holes and was then subject to CIL testwork.
The sample had an overall gold recovery of 96.3 per cent and an assayed head grade of 2.62g/t gold.
“The gold recovery achieved in the initial metallurgical testwork of oxide, transition and fresh mineralisation at Brolga is very encouraging,” Managing Director Glenn Jardine commented.
“Hemi is a growing resource and contains a combination of oxide, transitional and fresh sulphide mineralisation. We will continue to increase our understanding of the scale and metallurgical properties of each of these domains across the deposit with ongoing testwork,” he added.
An additional six holes have been drilled to provide larger volume samples. These holes are currently being sampled and are on route to ALS Metallurgy in Perth where they will be analysed.
Results from this program are expected in the September quarter and results will provide a detailed assessment of the deposit.
De Grey is up a slight 1.63 per cent on the market and shares are trading for 93.5 cents each at 11:28 am AEST.