Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2024 |
Duketon North Operations (DNO) comprises the Moolart Well, Gloster and Dogbolter pits with all ore processed through the Moolart Well processing plant.
The majority of open pit mining at DNO will continue at the Moolart pits until they come to the end of their current Reserves in the December quarter 2023. Open pit mining will continue in the Gloster pit until all open pit mining ceases at DNO in the June quarter 2024. Following completion of open pit mining, mill feed will be sourced solely from lower grade stockpiles. |
Source:
p. 13,46
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Summary:
Moolart Well.
Moolart Well, as part of the DNO, is a mesothermal gold deposit hosted dominantly in intermediate diorite intrusives but also in dolerite, basalt and to some degree ultramafic rock types. Hypogene gold mineralisation is structurally controlled in fresh rock and to a lesser extent in oxidised rock. Competency contrasts between rock types are thought to pay a major role in providing the architecture in which mineralisation occurs. The gold is associated with multiple local moderate to steep east dipping N-S striking structures. These are offset by a series of NW- SE striking post to syn-mineralisation structures which are also partly mineralised.
Deflation and lateritisation of the extant profile are responsible for accumulating a significant portion of the Moolart Well mineralisation into the overlying transported laterite regolith. Remobilisation of gold in the weathered residual profile has depleted the upper parts of the clay zone and enhanced the gold grade of the lower part of the profile in the saprock zone.
A model of the lithology and weathering was generated prior to the mineralisation domain interpretation commencing. The mineralisation geometry has a very strong relationship with the lithological interpretation and structure in both the laterite and the oxide/fresh mineralisations. The updated Reserve for Moolart Well includes numerous open pits, including the addition of three new mining areas (Buckingham, Eindhoven and Mit ........
Summary:
Duketon North Operations (‘DNO’) comprises the Moolart Well, Gloster and Dogbolter pits.
The mining method assumed in the Ore Reserve study is the same as that currently employed at the Moolart Well Gold Mine and the Gloster Gold Mine, which utilises drill and blast, excavator and truck open pit mining. The existing pit has been designed to be developed in a series of progressive cutbacks.
The majority of open pit mining at DNO will continue at the Moolart pits until they come to the end of their current Reserves in the December quarter 2023. Open pit mining will continue in the Gloster pit until all open pit mining ceases at DNO in the June quarter 2024. Following completion of open pit mining, mill feed will be sourced solely from lower grade stockpiles.
Source:
Single stage crushing circuit and single ball mill.
The site is of a basic layout utilising a single Ball Mill. Ore is conveyed from the Metso - Primary Jaw crusher to a stockpile where it is further conveyed to the mill with the discharged oversize rock being conveyed onto the scats circuit & passing through a Sanvik Pebble Crusher, back into the mill. The low grade ore is then ground into a slurry, pumped up to the cyclones via one of 2 warman pumps for separation & eventually making its way into gold extraction process of 6 Carbon in Leach Tanks.
Source:
Summary:
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Source:
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Reserves at December 31, 2022:
Open-Pit Ore Reserves: Cut-off grades for ROM - 0.6 g/t Au; Cut-off grades for LG - 0.3 g/t Au.
Open Pit Mineral Resources for Duketon North are Moolart Well, Gloster, Dogbolter-Coopers, Petra, Commonwealth, Ventnor and Terminator. Open Pit Resources are reported at cut-off grade of 0.4 g/t Au.
Underground Duketon North Mineral Resource is at Gloster. Resource reported within MSO shells at an economic cut-off of 1.5g/t Au.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
2 Mt
|
Gold
|
0.4 g/t
|
30 koz
|
Probable
|
3 Mt
|
Gold
|
1.1 g/t
|
90 koz
|
Proven & Probable
|
5 Mt
|
Gold
|
0.7 g/t
|
110 koz
|
Measured
|
4 Mt
|
Gold
|
0.5 g/t
|
60 koz
|
Indicated
|
15 Mt
|
Gold
|
1 g/t
|
480 koz
|
Inferred
|
5 Mt
|
Gold
|
1.1 g/t
|
180 koz
|
Total Resource
|
24 Mt
|
Gold
|
0.9 g/t
|
720 koz
|
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