RE:RE:RE:RE:RE:RE:RE:RE:RE:RE:Can't wait to see how the public will react. Hi all, first post here. Could someone tell me if I am correct in my analysis of the recent news ?
The test recently done for Cheechoo can't be quite compared to other recent open pits Canadian Malartic (±88%) and more recently Marban (w\ 93.7%) or Troilus.
Column leach test are only for heap leaching using an economic P80 of about 6.5 mm in this case (so no SAG&Ball mills required before process). 78 % recovery for 0.8-0.9 g/t is good, but they are at 151 days and I don't expect this to be Cheechoo's overall % since it doesn't have this av. grade. I think NaCN consumption is a little bit higher than Virgina Gold (VG is 1.19 NaCN kg/t so Cheechoo would cost a little bit more per processed ton). Comparative % Values for Virginia Gold :
10M dry tonnes per annum (M t/a) of crushed ore with a LOM average gold feed grade of 0.76 g/t and a LOM recovery of 78.4% after 90 days leaching
3M t/a (on average) of ROM ore at a grade of 0.22 g/t and a LOM 55.7% gold recovery after 90 days
Combined : 13M t/a at an average grade of 0.64 g/t and a LOM recovery of 76.9% after 90 days
The lower the grade, the lower the recovery,
The smaller the grind, the higher the recovery
We'll see how this plays out with more drilling results..