It seems refractory gold is still causing problems at the Hillgrove plant. IMO
I dont know about problems there was always some expected , as long as they have refractory GOLD it adds another processing stage and RVR at this point have chosen to have that processed for them instead of doing it themselves for the following reason.
"Gravity gold concentrate leaching through the Acacia gold reactor to produce gold doré commenced at the end of February 2021. 260 ounces of gold (contained in doré) was sold during the quarter. Total gold produced was 667 ounces into doré and flotation concentrates.The flotation concentrate produced contains a higher than expected proportion of refractory gold. Red River will commence selling the flotation concentrate in Q4, as selling the concentrate will generate a greater return than leaching the concentrate (which will only recover the leachable gold in concentrate) on site to produce gold doré."
The takeaway from that is by sending the concentrate to Glencor it will potentially recover other metals.
The reality is refractory GOLD requires more processing / cost regardless of who does it , they have chosen to farm it out for the above reason...
