Mineral Resources and Ore Reserves
Mining at Tomingley has been based on the Wyoming (One and Three) and Caloma (One and Two) gold deposits since 2014, with underground mining commencing in 2019.
The Tomingley Gold Extension Project is founded on the San Antonio and Roswell (SAR) gold deposits, located immediately to the south of the existing operation. Like the Caloma and Wyoming deposits, the SAR deposits are interpreted as orogenic gold systems positioned within a major structural zone. Their similar geology to the Caloma and Wyoming deposits make them ideal feedstock for the existing processing plant.
In 2021, the SAR resources and reserves were incorporated into the Tomingley Life of Mine Plan, incorporating open cut and underground operations.
The following tables detail the Mineral Resources and Ore Reserves for Tomingley Gold Operations as at 30 June 2021.
Mineral Resources
TGO Mineral Resources (as at 30 June 2021)
| Deposit | Measured | Indicated | Inferred | Total | Total Gold | ||||
|---|---|---|---|---|---|---|---|---|---|
| Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | ||
| (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Koz) | |
| Open Pittable Resources (cut off 0.50g/t Au) | |||||||||
| Wyoming One | 573 | 1.8 | 412 | 1.2 | 135 | 0.7 | 1,120 | 1.4 | 52 |
| Wyoming Three | 86 | 2.0 | 16 | 1.3 | 33 | 1.4 | 135 | 1.7 | 8 |
| Caloma | 801 | 1.6 | 1,070 | 1.2 | 579 | 1.2 | 2,450 | 1.3 | 105 |
| Caloma Two | 57 | 2.3 | 875 | 1.9 | 30 | 1.8 | 962 | 1.9 | 58 |
| Sub Total | 1,517 | 1.7 | 2,373 | 1.4 | 777 | 1.1 | 4,667 | 1.5 | 222 |
| Underground Resources (cut off 1.3g/t Au) | |||||||||
| Wyoming One | 1102 | 3.0 | 1,050 | 2.7 | 86 | 2.0 | 2,238 | 2.8 | 201 |
| Wyoming Three | 46 | 2.2 | 24 | 2.0 | 20 | 1.9 | 90 | 2.1 | 6 |
| Caloma One | 157 | 2.6 | 234 | 2.1 | 374 | 2.1 | 765 | 2.2 | 54 |
| Caloma Two | 2 | 3.6 | 699 | 2.5 | 153 | 2.3 | 854 | 2.5 | 67 |
| Sub Total | 1,307 | 2.9 | 2,007 | 2.6 | 633 | 2.1 | 3,947 | 2.6 | 328 |
| Total | 2,824 | 2.3 | 4,380 | 1.7 | 1,410 | 1.8 | 8,614 | 2.0 | 550 |
SAR Mineral Resources (as at 30 June 2021)
| Deposit | Measured | Indicated | Inferred | Total | Total Gold | ||||
|---|---|---|---|---|---|---|---|---|---|
| Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | ||
| (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Koz) | |
| Total Resources (cut off 0.50g/t Au) | |||||||||
| Roswell | 0 | 0 | 7,871 | 2.07 | 2,188 | 1.93 | 10,059 | 2.04 | 660 |
| San Antonio | 0 | 0 | 5,930 | 1.82 | 1,389 | 1.32 | 7,319 | 1.73 | 406 |
| Total | 0 | 0 | 13,801 | 1.96 | 3,577 | 1.69 | 17,378 | 1.91 | 1,066 |
Ore Reserves
TGO Ore Reserves (as at 30 June 2021)
| Deposit | Proved | Probable | Total | Total Gold | |||||
|---|---|---|---|---|---|---|---|---|---|
| Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | ||||
| (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Koz) | |||
| Open Pittable Reserves (cut off 0.50g/t Au) | |||||||||
| Wyoming One | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | ||
| Wyoming Three | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | ||
| Caloma | 398 | 1.7 | 78 | 1.2 | 476 | 1.6 | 25 | ||
| Caloma Two | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | ||
| Stockpiles | 72 | 1.2 | 0 | 0 | 72 | 1.2 | 3 | ||
| Sub Total | 470 | 1.6 | 78 | 1.2 | 548 | 1.6 | 28 | ||
| Underground Reserves (cut off 1.3g/t Au) | |||||||||
| Wyoming One | 780 | 2.1 | 410 | 2.1 | 1,190 | 2.1 | 81 | ||
| Caloma One | 3 | 1.5 | 113 | 1.5 | 116 | 1.5 | 5 | ||
| Caloma Two | 0 | 0 | 519 | 1.8 | 519 | 1.8 | 31 | ||
| Sub Total | 783 | 2.1 | 1,042 | 1.9 | 1,825 | 2.0 | 117 | ||
| Total | 1,253 | 1.8 | 1,120 | 1.9 | 2,373 | 1.9 | 144 | ||
SAR Ore Reserves (as at 30 June 2021)
| Deposit | Proved | Probable | Total | Total Gold | |||||
|---|---|---|---|---|---|---|---|---|---|
| Tonnage | Grade | Tonnage | Grade | Tonnage | Grade | ||||
| (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Kt) | (g/t Au) | (Koz) | |||
| Open Pittable Reserves (cut off 0.50g/t Au) | |||||||||
| Roswell | 0 | 0.0 | 3,679 | 1.7 | 3,679 | 1.7 | 202 | ||
| San Antonio | 0 | 0.0 | 4,188 | 1.6 | 4,188 | 1.6 | 218 | ||
| Sub Total | 0 | 0 | 7,867 | 1.7 | 7,867 | 1.7 | 420 | ||
| Underground Reserves (cut off 1.3g/t Au) | |||||||||
| Roswell | 0 | 0 | 1,575 | 2.8 | 1,575 | 2.8 | 142 | ||
| San Antonio1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Sub Total | 0 | 0 | 1,575 | 2.8 | 1,575 | 2.8 | 142 | ||
| Total | 0 | 0 | 9,442 | 1.9 | 9,442 | 1.9 | 563 | ||
*apparent arithmetic inconsistencies are due to rounding
1San Antonio Underground Reserves not determined at this time.
These Mineral Resources and Ore Reserves were reported to the ASX on 7 September 2021 in accordance with the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC 2012). Any differences to those tables are corrections to typographical errors; the assumptions and parameters detailed in that report are unchanged. Mineral Resources are wholly inclusive of Ore Reserves.
Competent Persons
The TGO Mineral Resource estimates is based on, and fairly represents, information which has been compiled by Mr Craig Pridmore, Geology Manager Tomingley Gold Operations, who is a Member of the Australasian Institute of Mining and Metallurgy and an employee of Alkane Resources Ltd. Mr Pridmore has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that is being undertaken to qualify as a Competent Person as defined in JORC 2012.
The TGO Open Pit Ore Reserve estimate is based on, and fairly represents, information which has been compiled by Mr John Millbank (Proactive Mining Solutions), an independent consultant, who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Millbank has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that is being undertaken to qualify as a Competent Person as defined in JORC 2012.
The TGO Underground Ore Reserve estimate is based on, and fairly represents, information which has been compiled by Mr Christopher Hiller (Hiller Enterprises Pty Ltd), an independent consultant, who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Hiller has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that is being undertaken to qualify as a Competent Person as defined in JORC 2012.