Overview
| Stage | Preliminary Economic Assessment |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 12 years (as of Jan 1, 2022) |
The PEA for Lawyer presents a solid open-pit mining operation with a base case scenario, attractive economics that have the potential to produce additional gold and silver ounces and improved economics through facility design adjustments. |
| Latest News | Thesis Gold Extends Dukes Ridge Mineralization to Depth; Intersects 16.52 m of 9.68 g/t AuEq August 29, 2023 |
Source:
p. 1
Mineral claims Lawyer are 100% owned by Benchmark Metals Inc., either directly or through its ownership of PPM Phoenix Precious Metals Corp.
On August 23, 2023, Thesis Gold Inc. (TSXV: TAU) (formerly Benchmark Metals Inc., the "Company") and Thesis Gold (Holdings) Inc. ("Thesis Holdings") announced that the Company has completed its business combination with Thesis Holdings pursuant to a court-approved plan of arrangement under the Business Corporations Act (British Columbia) (the "Transaction").
Under the terms of the Transaction, the Company acquired all of the outstanding shares of Thesis Holdings, and changed its name to "Thesis Gold Inc.".
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Deposit Type
- Porphyry
- Skarn
- Epithermal
- Breccia pipe / Stockwork
- Vein / narrow vein
Summary:
At the centre of the Lawyers Trend are the structurally controlled. Cliff Creek, Dukes Ridge, Phoenix, and AGB zones are located within a large 5 km by 8 km radiometric anomaly that is coincident with potassic alteration and associated with a low-sulphidation epithermal system.
The Cliff Creek, Dukes Ridge-Phoenix and AGB zones are all considered to be structurally controlled, low-sulphidation type epithermal gold-silver deposits. Evidence for a number of different mineral deposit styles occur in the Lawyers Property region, including low- and high-sulphidation epithermal gold-silver mineralisation, calc-alkalic porphyry copper-gold mineralisation, and uncommon iron or copper (± gold and silver) skarn mineralisation.
Volcanic strata on the Property are only very weakly altered and original textures generally well preserved. Narrow localized zones associated with mineralisation in the main zones show intense silicification and potassic alteration. A variety of alteration facies are observed across the Property, ranging from a massive advanced argillic zone north-west of Cliff Creek to the strong quartz-sericite-pyrite alteration concentrated along structures in the Marmot area. The alteration, variation and zonation suggest that the epithermal mineralisation on the Lawyers Property was part of a large-scale hydrothermal system.
The Lawyers Zones consist of a combination of quartz veins, stockwork zones and chalcedony breccia bodies developed al ........
Summary:
For this PEA, conventional, open pit mining was selected as the preferred mining method due to its relative low cost and high productivity, as well as the proximity to surface of the mineralised material. The open pit was selected from a series of optimized pit shells for each deposit. Each of the selected shells were then divided into pushbacks to help optimize the production schedule.
Over the life of mine the deposits are able to produce approximately 47 Mt of resources at a grade of 1.46 g/t AuEq and an overall strip ratio of 6:1. Mining activities will average 70 kt/d with a peak of 110 kt/d over a 12-year life of mine, in order to meet a Mill processing rate of 10,600 t/d (3.9 Mt/a).
The open pit mining activities for the Project are expected to be undertaken by an owner-operated truck/shovel fleet with conventional drill, blast, load and haul operations. Bulk excavation will be performed using hydraulic excavators with back-up units of either hydraulic excavators or a front-end loader. Given the overall scale of operations and equipment requirements, a diesel-powered fleet has been selected.
The open pits will provide mill feed to a crusher at a rate of 10,600 t/d (3.9 Mt/a). It is expected that some mill feed material will be stockpiled close to the crusher and rehandled as required. Waste material will be hauled either to the Tailings Management Facility (TMF) as part of the containment structure, to the Waste Rock Storage Facility ( ........
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Flow Sheet:
Summary:
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Reserves at June 11, 2022:
Total Mineral Resource Estimate 0.4 g/t Au-Eq Cut-off Pit-Constrained & 1.5 g/t AuEq Cut-off Out-of-Pit.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Measured
|
20,304 kt
|
Gold
|
1.21 g/t
|
787 koz
|
|
Measured
|
20,304 kt
|
Silver
|
30.5 g/t
|
19.9 M oz
|
|
Measured
|
20,304 kt
|
Gold Equivalent
|
1.88 g/t
|
1,036 koz
|
|
Indicated
|
47,071 kt
|
Gold
|
1.15 g/t
|
1,734 koz
|
|
Indicated
|
47,071 kt
|
Silver
|
19.6 g/t
|
29.6 M oz
|
|
Indicated
|
47,071 kt
|
Gold Equivalent
|
1.39 g/t
|
2,105 koz
|
|
Measured & Indicated
|
67,376 kt
|
Gold
|
1.16 g/t
|
2,521 koz
|
|
Measured & Indicated
|
67,376 kt
|
Silver
|
22.9 g/t
|
49.6 M oz
|
|
Measured & Indicated
|
67,376 kt
|
Gold Equivalent
|
1.45 g/t
|
3,141 koz
|
|
Inferred
|
4,873 kt
|
Gold
|
2.2 g/t
|
345 koz
|
|
Inferred
|
4,873 kt
|
Silver
|
36.1 g/t
|
5.7 M oz
|
|
Inferred
|
4,873 kt
|
Gold Equivalent
|
2.65 g/t
|
415 koz
|
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