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Tomingley Gold Operation

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Gold
Mining Method
  • Longhole open stoping
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SnapshotTomingley Gold Operations consists of several gold deposits and CIP processing plant.

Mining at Tomingley has been based on the Wyoming One, Wyoming Three, Caloma One and Caloma Two gold deposits. Open pit mining ceased in 2023 and the operation transitioned to fully underground mining at Wyoming One, Caloma One and Caloma Two. In April 2024, underground mining commenced at the Roswell deposit.

In April 2024, underground mining commenced at the Roswell deposit, approximately 2.7 kilometres south of Tomingley, following the required government approvals.

The Tomingley Gold Extension Project (TGEP) encompasses new developments to the immediate south of the TGO site. The primary deposits are Roswell and San Antonio, which have been connected by an underground drive that extends from the Wyoming One pit to the north end of the defined Roswell resource.
Related AssetTomingley Gold Extension Project

Owners

SourceSource
CompanyInterestOwnership
Alkane Resources Ltd. 100 % Indirect
Tomingley Gold Operations Pty Ltd. (operator) 100 % Direct
Alkane Resources Ltd. owns and operates Tomingley Gold Operations through its subsidiary Tomingley Gold Operations Pty Ltd.

Deposit type

  • Porphyry
  • Vein / narrow vein

Summary:

Tomingley Deposits: Wyoming One, Caloma, Caloma Two.

Mineralisation is associated with quartz veining and alteration focused within sub-volcanic basalticandesite sills and adjacent volcaniclastic sediments. Thedeposits appearto have formed asthe result of a rheological contrast between the porphyritic sub-volcanic sills and the surrounding volcaniclastic sediments, with the sills showing brittle fracture and the sediments ductile deformation, and have many similarities to well documented orogenic - lode-style gold deposits.

Wyoming One
Mineralisation at Wyoming One is developed within a number of different zones which have been domained based on the geology, style of mineralisation and continuity of high mineralisation that can be separated:

* Porphyry – mineralisation hosted by a quartz stockwork within the carapace of a sub-volcanic sill with dimensions roughly 60m x 150m. High grade mineralisation is developed along the eastern and northern contact of the sediment and porphyry. This High Grade mineralisation on the contact has been domained separately for the estimation and is currently referred known as the “High Grade 101 porphyry lode” mentioned below. Within the main porphyry body there are several internal mineralised stacked lodes that dip 45° to the NE. These structures were evident from the close spaced open pit RC Grade control drilling. Underground Diamond drilling has confirmed these stacked lodes and the targeting and defining of more internal porphyry mineralised structures will be a focus as mining continues.

* Hangingwall – a linear zone of mineralisation situated approximately 30m to hanging wall of the ‘porphyry’ mineralisation and hosted within quartz veins within silicified fine grained sediments and a brecciated carbonaceous mudstone. This zone is lithologically constrained with these fine grained sediment package which folds around the northern end of the porphyry;

* High Grade 101 Porphyry Lode”’ –This zone was previously known as the ‘376” structure interpreted to be a bounding structure and primary fluid conduit. This High Grade zone of mineralisation is developed at the eastern and northern contact of the porphyry and incorporates some of the contact metasediments which were impacted by the mineralisation.

* Footwall – a low grade zone located in a similar stratigraphic position to the hangingwall zone but footwall to the porphyry.

Caloma
Mineralisation at Caloma is developed within a series of stacked ‘quartz lodes’ which dip shallowly to the west and hosted dominantly within the sub-volcanic sills. The lodes are cross cut by a number of barren post mineralisation dolerite dykes.

Caloma Two
Mineralisation at Caloma Two is developed within a series of ‘quartz lodes’ which dip north at flat to moderate angles and hosted dominantly within the sub-volcanic sills. Mineralisation is also developed along a sediment contact zone which appears to be a potential linking structure with the Caloma mineralisation to the north. There is also evidence for the development of an inverted saddle reef at depth. The lodes are cross cut by a number of post mineralisation dolerite dykes.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits202420232022202120202019201820172016
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe48,969 78,533 68,836 67,812 
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational metrics

Metrics202420232022202120202019201820172016
Plant annual capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1 Mt1 Mt1 Mt
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe400,187 t1,589,811 t1,222,868 t1,285,454 t
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe998,702 t1,092,602 t1,087,983 t1,096,105 t
Waste OP  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Total tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe804,016 bcm3,755,265 bcm8,140,469 bcm
Stripping / waste ratio  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe4.5 5.4 16.6 12.2
Waste OP+UG  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe657,648 bcm3,165,414 bcm7,679,110 bcm6,199,820 bcm

Production Costs

CommodityUnits20242023202220212020201920182017
All-in sustaining costs (sold) Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 946 / oz   1,002 / oz   1,335 / oz  
C1 cash costs (sold) Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 748 / oz   767 / oz   1,127 / oz  
^ Guidance / Forecast.

Financials

Units20242023202220212020201920182017
Revenue M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 92.5   128.8   117.3  
Pre-tax Income M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 31.9   38.6   17.1  

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Mine Management

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Aerial view:

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