Great Northern Minerals Limited (ASX: GNM) has identified intersections of quartz veining and disseminated sulphides in multiple holes extending known mineralisation in its RC drilling programme at Golden Cup in Queensland.
A planned drilling programme was successfully completed, comprising eleven RC drillholes for 1,022m drilled. The drill holes were designed to test along strike and the down dip extensions of mineralisation intersected in previous drilling beneath historical open pits at Golden Cup.
Mineralisation associated with quartz veining and mixed disseminated sulphides (pyrite and arsenopyrite) was encountered in nine drillholes of the initial 11-hole programme.
Based on this success, an additional seven RC drillholes were completed (for 685m drilled) to test for extensions to the newly defined mineralisation.
“The RC drilling programme at Golden Cup has been successfully completed, with mineralisation (quartz veining with disseminated fine grained pyrite and arsenopyrite) intersected in nine out of 11 drill holes in the initial programme,” GNM CEO and Managing Director, Cameron McLean, said.
“The drill programme was then extended by an additional seven holes to test the down dip extensions of the mineralisation intersected in the initial holes.
“The samples have been submitted to the assay laboratory and we will update the market when we receive the results. Whilst we wait for the assays, we turn our attention to completing the permitting and drill design activities to allow us to drill our exciting Douglas Creek target.”
The Golden Cup deposit is located on ML 4536 and is part of GNM’s Golden Ant Project in North Queensland.
Nine open pits were mined over 1,500m of strike length for 0.2Mt tonnes of ore produced at an average grade of 2.8 g/t Au, with production finishing in 1993. The average pit depth was less than 15m, targeting the oxide mineralisation. Golden Cup has a current JORC compliant Inferred Mineral Resource of 256,000 tonnes @ 3.6 g/t Au (30,000 ounces contained Au).
Golden Cup Drilling Programme
Eighteen reverse circulation (RC) drill holes (GCRC082 to GCRC099) were completed (total of 1,707m drilled) at GNM’s Golden Cup deposit. The initial 11-hole drill programme (1,022m drilled) was designed to target extensions to known high grade gold mineralisation and to extend the high-grade gold mineralisation at depth and along strike.
Nine drill holes in the initial programme intersected visually identified mineralisation (quartz veins plus fine-grained disseminated pyrite and arsenopyrite with associated silica + sericite ± carbonate alteration and bleaching), and the programme was extended by an additional seven drillholes (685m drilled) to test for extensions to the newly defined mineralisation.
Visual estimates of quartz veining, sulphide content and alteration were completed in the field by a geologist and should not be considered as a proxy or substitute for laboratory analysis. The sulphides consisted of fine-grained disseminated pyrite and arsenopyrite.
For further information please visit: http://www.greatnorthernminerals.com.au/
