Nugget effect holes: calculation tool This is a great tool developed by Brent Cook and corebox.net to help investors figure out remaining grades of long intercepts which include short "nugget effect" intervalls:
https://www.corebox.net/drill_interval_calculator
Just some GTA results:
1. WB 12-13 (April 18): 80m @ 0.77 gpt Au
incl. 1m @ 24,93 gpt Au
-> remaining 79m (= 99% of the hole) @ 0.46 gpt Au !
2. WB 12-14 (April 18): 81.5m @ 3.15 gpt Au
incl. 12m @ 7.82 gpt Au and
incl. 4.5m @ 6.99 gpt Au and
incl. 2m @ 39.58 gpt Au
-> remaining 63m (= 77% of the hole) @ 0.83 gpt Au !
3. WB 11-11 (Feb. 14): 149.5m @ 3.21 gpt Au
incl. 1m @ 35.78 gpt Au
incl. 0.4m @ 760.15 gpt Au
incl. 3m @ 11.96 gpt Au
incl. 2m @ 13.20 gpt Au
-> remaining 143.1m (= 96% of the hole) @ 0.54 gpt Au !
I think, this clearly shows, that some of GTA´s holes are severely effected by the nugget effect and big parts of some holes only contain minor Au grades !
Just do your own calculations with some other holes !
FANTOMAS