Talisman Mining: Talisman Mining about to start reverse circulation percussion drilling at Blind Calf Copper Prospect in NSW

Talisman Mining Ltd (ASX:TLM) (FRA:RJA) will kick-off a reverse circulation (RC) percussion drilling program within the next few days at Blind Calf Copper Prospect within the Lachlan Copper-Gold Project in central New South Wales. This drilling will test four electromagnetic (EM) conductors identified from down-hole EM surveys completed by Talisman during 2019. The company's more than 2,500 square kilometres Lachlan Project in NSW comprises a dominant position across the Northern Cobar Basin and includes numerous prospects along the Canbelego-Mineral Hill Volcanic Belt, which hosts the high-grade Mt Boppy gold deposit and the Mineral Hill gold and base metal deposit. Blind Calf down-hole EM targets Blind Calf prospect includes several north-south trending mineralised structures, which cover a total strike extent of 900 metres. To date, most of the exploration drilling has been directed towards the Blind Calf and Dunbar's structures, where high-grade copper mineralisation has been intersected in bedrock drilling. Structural and alteration mapping completed during 2019 identified three main mineralised corridors at Hilltop, Blind Calf-Dunbar's and Engine - all trending in a north-south orientation. Talisman completed several RC drill holes in 2019, targeting the mineralised corridors at Hilltop and Engine, with subsequent down-hole EM surveys detecting conductors at several locations. Strong correlation with chalcopyrite Chalcopyrite is the primary copper-bearing sulphide mineral at Blind Calf with very little pyrite or other sulphide minerals present. As a result, the grade of the primary copper mineralisation has a strong correlation with the chalcopyrite content. While chalcopyrite is a low-conductance sulphide mineral, down-hole EM surveys are a very effective tool for detecting high-grade copper mineralisation in proximity to drill holes. The conductors to be tested in the current drilling program are interpreted to represent primary chalcopyrite mineralisation.