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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
Medellín
Colombia
050021
Phone  ...  Subscription required
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  • Overview
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  • Geology
  • Mining
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  • Reserves
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  • Filings & News
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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
Production Start...
Mine Life24 years (as of Jan 1, 2021)
One of the Largest Undeveloped Gold Deposits in the Americas.
Latest NewsAris Mining Announces Updated Mineral Resource Estimate For The Toroparu Project In Guyana     March 14, 2023

Owners

Source: p. 47,72
CompanyInterestOwnership
Aris Mining Corp. 100 % Indirect
ETK Inc. (operator) 100 % Direct
The Toroparu Gold Project is held and operated through ETK Inc. (ETK), the GCM Mining’s wholly-owned subsidiary.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork
  • Intrusion related
  • Orogenic
  • Saprolite

Summary:

The Toroparu Deposit, Main, and South East areas are representative of an Archean gold (±copper) intrusion related system (Kontak, Katz, & Dubé, 2012) (Katz, Kontak, Dubé, & McNicoll, 2015) (Mathieu, Crépon, & Kontak, 2020). It closely resembles other structurally controlled, mesothermal gold systems seen in Archean greenstone belts such as the Abitibi or the Yilgarn craton. It appears genetically similar to deposits such as Côté Gold, Lac Doré, Boddington and Las Cristinas. Deposits of this type are closely associated with intrusive suites with geochemical signatures of rocks derived from hybrid melts (high heavy rare earth element, abundance of intermediate units, low- to moderate water content) (Mathieu, Crépon, & Kontak, 2020). They include porphyry copper-gold, syenite-associated disseminated gold, and reduced gold-bismuth-tellurium-tungsten intrusion related deposits, as well as stockwork disseminated gold. It is thought that this could be a result of the overprinting of two different deposit types. The Sona Hill Deposit represents an orogenic lode gold deposit and is related to the gold ± copper system at the Toroparu Deposit.

Toroparu Deposit, Main, and SE Areas
The Toroparu Deposit mineralization is oriented in a west-northwest direction with cross-cutting eas-twest mineralized structures. The system corresponds to a 2.7 km long and 200 m to 40 m wide body and extends to over 400 m in depth. The mineralized body occurs along the northwestern boun ........

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
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

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
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Daily processing capacity  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
* According to 2021 study.
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Reserves at November 1, 2021:
The Open Pit Mineral Resource is based on a 0.40 g/t gold cut-off grade, and the Underground Mineral Resource is based on 1.80 g/t gold cut-off grade.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable In-Situ (OP) 93,117,745 t Gold 1.53 g/t 4,567,086 oz
Proven & Probable In-Situ (UG) 14,184,742 t Gold 3.48 g/t 1,588,984 oz
Proven & Probable Total 107,302,487 t Gold 1.78 g/t 6,156,070 oz
Proven & Probable In-Situ (OP) 93,117,745 t Copper 0.1 % 95,541 t
Proven & Probable In-Situ (UG) 14,184,742 t Copper 0.09 % 13,422 t
Proven & Probable Total 107,302,487 t Copper 0.1 % 108,963 t
Proven & Probable In-Situ (OP) 93,117,745 t Silver 1.27 g/t 3,804,276 oz
Proven & Probable In-Situ (UG) 14,184,742 t Silver 0.41 g/t 189,133 oz
Proven & Probable Total 107,302,487 t Silver 1.16 g/t 3,993,409 oz
Measured & Indicated In-Situ (OP) 179,264,284 t Gold 1.36 g/t 7,856,649 oz
Measured & Indicated In-Situ (UG) 5,705,101 t Gold 3.16 g/t 580,390 oz
Measured & Indicated Total 184,969,385 t Gold 1.42 g/t 8,437,039 oz
Measured & Indicated In-Situ (OP) 179,264,284 t Copper 0.097 % 385,198,283 lbs
Measured & Indicated In-Situ (UG) 5,705,101 t Copper 0.088 % 11,088,186 lbs
Measured & Indicated Total 184,969,385 t Copper 0.097 % 396,286,470 lbs
Measured & Indicated In-Situ (OP) 179,264,284 t Silver 1.03 g/t 5,924,409 oz
Measured & Indicated In-Situ (UG) 5,705,101 t Silver 0.42 g/t 77,113 oz
Measured & Indicated Total 184,969,385 t Silver 1.01 g/t 6,001,522 oz
Inferred In-Situ (OP) 5,392,913 t Gold 1.5 g/t 260,473 oz
Inferred In-Situ (UG) 8,402,611 t Gold 3.53 g/t 952,845 oz
Inferred Total 13,795,524 t Gold 2.74 g/t 1,213,317 oz
Inferred In-Situ (OP) 5,392,913 t Copper 0.061 % 7,304,715 lbs
Inferred In-Situ (UG) 8,402,611 t Copper 0.091 % 16,884,424 lbs
Inferred Total 13,795,524 t Copper 0.08 % 24,189,139 lbs
Inferred In-Situ (OP) 5,392,913 t Silver 0.63 g/t 108,776 oz
Inferred In-Situ (UG) 8,402,611 t Silver 0.25 g/t 68,259 oz
Inferred Total 13,795,524 t Silver 0.4 g/t 177,035 oz

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Gold USD  ......  Subscription required&nbs
Site cash costs (produced) Gold USD  ......  Subscription required&nbs
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&nbs
Assumed price Silver USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* 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
Subscription required - Subscription is required.

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 Jul 31, 2022
....................... 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 Jul 31, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Corporate Presentation 2022
Corporate Presentation 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
................................... Subscription required 2019
Subscription required - Subscription is required.

News:

NewsDate
Aris Mining Announces Updated Mineral Resource Estimate For The Toroparu Project In Guyana March 14, 2023

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