Mineralisation at the Frieda River project
The Horse / Ivaal / Koki deposits are spread across an area of three square kilometres of the FRIC. They contain porphyry copper-gold mineralisation associated with multiphase intrusives in the form of chalcopyrite, bornite and chalcocite. High grade mineralisation is found to occur in steep north-west trending structures.
Nena is a high sulphidation epithermal deposit hosted by andesitic lapilli tuffs. The mineralised area forms a 1,200m long sub-horizontal cigar shaped structure with a diameter of 300m. The main copper minerals occurring in the deposit are chalcocite, covellite, enargite / luzonite and minor stibioluzonite.
Construction and infrastructure
The Frieda River project is one of the most isolated and remotely located mines in the region.
It features rugged terrain, which makes it one of the most technically challenging mine sites in the world.
Development of the mine will include construction of a crushing and process plant, a 160MW hydro-electric dam and power station, maritime ports, 120km of new access roads, large mining infrastructure and an airport.
The entire infrastructure will be located within the rugged highlands of Papua New Guinea.
Mining the copper and gold deposits
Frieda will be mined through open pit operations. Mining will be initially carried out at the Horse / Ivaal / Trukai deposit. The recovered ore will be processed by conventional comminution, grinding and flotation method to produce a copper-gold concentrate.
The concentrate will be transported through a pipeline to a dewatering plant located at the Sepik River. It will further be transferred onto river-going barges to a concentrate silo vessel for export.