RE: Tunnel designation confusion?9 Dec 2024 13:43
This was written and posted by the Geologist AGEOS, 20-10-2024.
His take on Pepas before the new drilling campaign, before the two blockbusters, 66m @5.6g/t & 77m @ 7.64g/t.
AGEOS wrote:
For those who wish to know how the 873.000oz Au RE for Pepas is calculated.
Firstly calculate the resource volume. As the mineralised stockwork was intercepted at or near surface to approximate 100m depth [vertical depth not down-hole depth] and the hydrothermal breccia which hosts it is shown on geological maps as outcropping over an area of approximately 150 x 250m, the maximum stockwork resource within those parameters has a volume of 3,750,000cu m. It may of course extend beyond 100m depth but probably not beyond c200m since at least one of the W to E holes is inferred to have passed below the stockwork at slightly greater depth [2 of the 5 planned holes will test for stockwork below 100m depth]. The stockwork may also extend into a laterally displaced portion of breccia, faulted to the NW but if it does, PEP003 & PEP009 missed it. None of the 5 planned holes will test for that possible extension.
Secondly calculate the resource tonnage. The similarly mineralised quartz-veined “siliceous breccia” from APTA has a specific gravity of 2.2, therefore resource tonnage ie volume of 3,750,000cu m x 2.2sp g is 8,250,000 metric tons.
Thirdly calculate the Au resource. At an average of 3g/tAu that is 24,750,000g which at 28.349g per oz equates to 873,000oz Au.