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Guyana
Toroparu Project

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 Location:
213 km W from Georgetown, Guyana

  Project Contacts:
Cra. 43 A # 14-57, Piso 13. Edificio san Francisco, Antioquia
Vancouver
Colombia
V6C 0A3
Phone  ...  Subscription required
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
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Overview

StagePermitting
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Longitudinal retreat
  • Paste backfill
Mine Life24 years (as of Jan 1, 2021)
Toroparu Project (Cuyuni-Mazaruni, Guyana) : an advanced stage gold project with a large-scale gold-copper deposit. Following completion of the business combination between the Company and Aris Gold in September 2022 (the Aris Mining Transaction), Aris Mining announced and commenced a re-evaluation process for the Toroparu Project and reduced the previously planned expenditures on the Toroparu Project until the evaluation is complete and a development plan is fully defined. Aris Mining is progressing additional studies to update, fully-define and optimize the development plan.


Owners

Source: p. 7
CompanyInterestOwnership
Aris Mining Corp. 100 % Indirect
Aris Mining owns the Toroparu Project in Guyana.

Contractors

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Deposit Type

  • Orogenic
  • Porphyry
  • Vein / narrow vein


Summary:

Property Geology
Thin, discontinuous mineralized shear zones at the Toroparu deposit are developed mainly in the volcanic rocks. Higher grade, discontinuous shear zone hosted mineralization is narrow and mostly parallel to the schistosity. The main controls on mineralization are the west-northwest striking axial planar schistosity and vein swarms that are well developed in the volcanic rocks, and the folded contact between an intrusive complex and the volcanic rocks, particularly the contact of an igneous breccia that forms an important rheological contrast, similar to many other orogenic gold deposits that are strongly controlled by competency contrasts. The deposit dips roughly 55° to the west.

The Sona Hill deposit has similar controls on mineralization but strikes to the north and dips around 30° to the west.

Mineralization and Alteration
Mineralization at the Toroparu deposit estimated as mineral resources in the main zone has a footprint of around 1.3 km along strike, around 500 m across strike, and a depth of 550 m. There is a zone of mineral resources approximately 1.1 km to the southeast of the main zone with a footprint of around 400 m along strike, 230 m across strike, and a depth of 250 m. There are a few other small zones of mineral resources on the order of 100 m long along strike of and parallel to the main zone. The mineralized shear zones are narrow and discontinuous. Sona Hill has a footprint of around 950 m along strike, up ........


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping
  • Longitudinal retreat
  • Paste backfill


Summary:

The Project will be mined using open pit methods for the initial part of the extraction and in year 10 an underground mining method will be started. Both mining methods will continue to the end of the life of the asset.

Open Pit Mining
A conventional truck-shovel method was considered for the open pit portion of the Toroparu Deposit. The open pit analysis results in several distinct open pits coalescing into the NW and Main Toroparu Pits over time. The Sona Hill and Southeast Zone (SE) will be developed in a similar fashion beginning in year 3 and 6 respectively. The final dimensions of the NW Pit are approximately 990 m long x 690 m wide x 360 m deep. The dimensions of the Main Pit are approximately 1,300 m long x 750 m wide x 470 m deep. The open pit LoM plan proposes to mine approximately 93 Mt at a cut-off grade of 0.5 g/t Au and 558 Mt of waste rock material. The average stripping ratio for the open pit operations is 6:1 over the LoM. Each pit is currently planned to be developed with 29 phases each. Compacted saprolitic waste material will be used to construct haul roads, facility pads and flood control berms, levies, and other structures.

The PEA mining plan includes the Main, NW, SE and Sona Hill Pits. The Main, NW and SE pits are located within the Toroparu Deposit and the Sona Hill Pit is located within the Sona Hill deposit. The SE pit is located 1 km southeast of the Main and NW Pits and the Sona Hill Pit is located approximately 5 km ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Gold Metal in concentrate koz 1,106
Gold Metal in doré koz 4,337
Gold Payable metal koz 2255,407
Gold Metal in conc./ doré koz 2335,443
Copper Concentrate kt  ......  Subscription required
Copper Payable metal M lbs  ......  Subscription required
Copper Metal in concentrate M lbs  ......  Subscription required
Silver Metal in doré koz  ......  Subscription required
Silver Metal in concentrate koz  ......  Subscription required
Silver Payable metal koz  ......  Subscription required

Operational Metrics:

Metrics
Daily processing capacity  ......  Subscription required
Annual processing capacity  ......  Subscription required
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at February 10, 2023:
Open pit mineral resources are reported above a cut-off grade of 0.5 g/t gold within an optimized pit shell using a gold price of $1,650 per ounce. Underground mineral resources are reported within Mineable Stope Optimizer shapes generated at a cut-off grade of 1.5 g/t gold and is inclusive of material below 1.5 g/t gold within those shapes.

CategoryTonnage CommodityGradeContained Metal
Measured 42.4 Mt Gold 1.45 g/t 1,975 koz
Measured 42.4 Mt Copper 0.14 % 61 kt
Measured 42.4 Mt Silver 1.8 g/t 2,457 koz
Indicated 72.6 Mt Gold 1.46 g/t 3,398 koz
Indicated 72.6 Mt Copper 0.08 % 57 kt
Indicated 72.6 Mt Silver 1.2 g/t 2,893 koz
Measured & Indicated 115 Mt Gold 1.45 g/t 5,373 koz
Measured & Indicated 115 Mt Copper 0.1 % 118 kt
Measured & Indicated 115 Mt Silver 1.5 g/t 5,350 koz
Inferred 21.2 Mt Gold 1.71 g/t 1,168 koz
Inferred 21.2 Mt Copper 0.04 % 9 kt
Inferred 21.2 Mt Silver 0.8 g/t 517 koz

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Gold USD  ......  Subscription required
Site cash costs (produced) Gold USD  ......  Subscription required
Cash costs Gold USD  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required
Assumed price Copper USD  ......  Subscription required
Assumed price Silver USD  ......  Subscription required
Assumed price Gold USD  ......  Subscription required
* According to 2021 study / presentation.
† Net of By-Product.
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Operating Costs:

Units2021
Combined mining costs ($/t mined) USD 2.65 *  
Combined mining costs ($/t milled) USD  ......  Subscription required
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Expansion CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP/UG OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 1,558
Refining costs $M USD  ......  Subscription required
Freight costs $M USD 46.3
G&A costs $M USD 360.1
Total OpEx $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
EBITDA (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Pipelines and Water Supply
Source: Subscription required

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Proposed Heavy Mobile Equipment as of December 1, 2021:
HME TypeModelSizeQuantity
ANFO Loader 97 kW ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 1, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 1, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 1, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
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Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Corporate Presentation 2023
Financial Review 2023
Management Discussion & Analysis 2023
Technical Report 2023
Annual Information Form 2022
Corporate Presentation 2022
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
................................... Subscription required 2019
Subscription required - Subscription is required.

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