Don't want to nit pick, but we have no indication that the USD...

Don't want to nit pick, but we have no indication that the USD 4.8mm is all that it will cost. Also, we have to pay that back out of the Cs.
I guess it could cost $4.8mm to get down to the Cs, in which case, that is the cost of mining the Feldspar. Treating them as separate resources, there has to be a cost to digging anything up right? Hence my admittedly conservative calculation.
Doesn't seem to matter because the market simply couldn't care less by the looks of it.