A lot of gold producers and resource holders are using 0.4 g/t Au cut off.
At current A$2500/oz gold price 0.4 g/t Au is ~ $32/t rock, at 90% recovery - $29/t recovered value, still attractive with process costs of $12 to $15/t.
Lower grade ounces might be stockpiled to front load the grade through a plant.
At the end of the day it will come down to strip ratio, costs and recoveries.
Note the extra ounces were all above the >1050RL, so probably inside an existing pit. So already being mined.
The whole Drummond Strategy is to get a larger resource base to sustain lower unit costs – larger mining rates – lower costs, larger process plant throughput – lower costs.
Note that GBM’s Koala resource used 0.4 g/t Cut-off in 2019.
See below from Gold Road:
https://goldroad.com.au/ore-reserve-and-mineral-resources-statements/
AllOpen Pit Mineral Resources are evaluated using variable cut-off grades allowingfor processing costs, recovery and haulage to the Gruyere Mill, and reportedat: Gruyere and YAM14 – 0.4 g/t Au. Attila, Orleans, Argos, Montagne and Alaric– 0.5 g/t Au. Renegade, Gilmour, Smokebush and Warbler – 0.5 g/t Au
AllOpen Pit Mineral Resources are constrained within an A$2,000 per ounce (GruyereJV) or an A$2,200 per ounce (Gold Road 100%) optimised pit shell derived frommining.
Also see below from EVNEvolution – Mungari Resource 0.5 g/t Au – ASIC 1800 to 1900
- Forums
- ASX - By Stock
- GBZ
- Ann: Significant Resource Upgrade at Twin Hills Project
Ann: Significant Resource Upgrade at Twin Hills Project, page-9
-
- There are more pages in this discussion • 12 more messages in this thread...
You’re viewing a single post only. To view the entire thread just sign in or Join Now (FREE)
Featured News
Add GBZ (ASX) to my watchlist
|
|||||
Last
0.7¢ |
Change
0.000(0.00%) |
Mkt cap ! $8.096M |
Open | High | Low | Value | Volume |
0.0¢ | 0.0¢ | 0.0¢ | $0 | 0 |
Buyers (Bids)
No. | Vol. | Price($) |
---|---|---|
6 | 1915648 | 0.7¢ |
Sellers (Offers)
Price($) | Vol. | No. |
---|---|---|
0.8¢ | 448625 | 3 |
View Market Depth
No. | Vol. | Price($) |
---|---|---|
6 | 1915648 | 0.007 |
2 | 500000 | 0.006 |
2 | 370000 | 0.005 |
1 | 500000 | 0.004 |
1 | 600000 | 0.003 |
Price($) | Vol. | No. |
---|---|---|
0.008 | 448625 | 3 |
0.009 | 1214150 | 4 |
0.010 | 900000 | 2 |
0.011 | 409000 | 1 |
0.012 | 1060798 | 4 |
Last trade - 11.15am 15/08/2024 (20 minute delay) ? |
Featured News
GBZ (ASX) Chart |
Day chart unavailable
The Watchlist
I88
INFINI RESOURCES LIMITED
Charles Armstrong, CEO & Managing Director
Charles Armstrong
CEO & Managing Director
SPONSORED BY The Market Online