New Talisman Gold Mines Ltd (NZX & ASX: NTL) said yesterday it was advancing work on the Mystery Vein at the Talisman mine redevelopment at Karangahake.
The face of the drive on has demonstrated an extension of high grade gold-silver mineralisation.
Regular extraction activities are now in place on the northern extension of the Mystery Vein and the face of the drive has now been advanced a further 6.1 metres. This has exposed an extension of the vein which averages 0.9m in width.
Testing of the mining method - where the vein and associated waste material are extracted in separate cuts – “is proving successful with the primary extraction of the vein achieving a clean break on the contact between the vein and host rock.”
This, NTL said, enables the vein material to be loaded separately from the waste and maximise the grade of ore trammed to the run of mine stockpile.
Eight tonnes of ore has been removed from the face and the results of regular in stream sampling have identified gold grades ranging from 6.2 grams/tonne gold to 18.2 g/t Au for an average of 11.9 g/t Au. Silver ranges from 23 g/t Ag to 37g/t Ag for an average of 28.3g/t Ag.