GT1 - Megathread, page-418

My guess would be Wisa rather than Allison Lake as the next project area but accepted, it could be a close run thing. Someone has been fishing around and updating elements of the Ontario Mineral Inventory and the only logical person to be doing this is GT1 head office staff. The last record update was only a couple of days ago on the 7 December 2022 (the same date incidentally that South Aubry was updated). North Aubry was last updated 23-Feb-2022.

Wisa has a known non-JORC resource of 330kt @ 1.15% which appears too small to be economic but that's forgetting what's happened to spod prices and the GT1 plan has a Concentrator being built at Root. For a laugh, if Wisa potential revenue was priced at Core's DSO auction scaled for being 1.15% not 1.4% it would be $258m [330kt & (1.15/1.4)*$951]. That would appear to leave a lot of profit after covering any operating/capital costs of a DSO and truck to root operation (A root concentrator would however need to profitably work with this starting price!!).

But Wisa may be a lot bigger
But Wisa may be massively bigger than the 330kt suggests. GT1 drilling has so far found strike lengths are extending further than early estimates. Down-dip lengths extend to the hundreds of metres. The strike length is 1.5km of traced dyke at North Wisa and perhaps 350 at South. So relative to this old estimate using 1100 feet (335m), the strike length is possibly 1850m or a 5.5x multiplier. If the down depth is 200m not 200 feet (61m) then there's a 3.3x multiplier. This means Wisa could be 18x the current 330kt estimate (i.e. nearer 6Mt).

There could also be upside on the widths. Backwards engineering using a density of 2.7, the estimate for Wisa is based on a 6m average width. If the Width is nearer the 10m then this 6Mt would increase to 10Mt. If it was 15m (on-average) you could be looking at 15Mt. The website notes widths exceeding 20m (surface). If widths are in the 10-20m range....

335.3 (1100 feet) * 61.0 (200 feet) * 2.7 average ore density * 6m ave = 331,106 (330kt) but what if it is really:
1850 * 200 * 10-15m * 2.7 = 10-15Mt