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Brazil
Tocantinzinho Project

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 Location:
202 km S from Itaituba, Brazil

  Project Contacts:
Avenida Olegario Marciel, 1846 Santo Agostinho
Belo Horizonte
Brazil
30180 - 119
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageConstruction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life10.5 years (as of Jan 1, 2021)
Latest NewsG Mining Ventures Completed Significant Milestones in 2022, Positioned for Growth in 2023 and Beyond     January 10, 2023


Owners

Source: p. 31
CompanyInterestOwnership
G Mining Ventures Corp. 100 % Indirect
GMIN completed the acquisition of the Project from Eldorado Gold Corp. (“Eldorado”) through the purchase of all the issued and outstanding shares of Brazauro Recursos Minerais S.A. (“Brazauro” or “BRM”) on October 27, 2021.

Contractors

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Deposit Type

  • Intrusion related
  • Vein / narrow vein
  • Hydrothermal


Summary:

The Tocantinzinho deposit is best classified as a granite-hosted, intrusion-related gold deposit. Intrusion related gold deposits were defined by Thompson et al. (1998) with the following characteristics:
• Deposits hosted within or zoned proximal to intermediate to felsic granitic rocks.
• Intrusions are typically moderately reduced to moderately oxidized (ilmenite through to magnetite series) I-type granitic rocks.
• The associated pathfinder elements are typically Bi, Te, Mo, W in the core of the intrusion system, zoning outward to distal As, Sb, Pb and Zn.
• The deposits have a range in styles including sheeted, breccia, stockwork, flat-vein and disseminated to greisen that is controlled by proximity to intrusions, depth of emplacement and structural controls on intrusions.
• Mineralization is coeval with the related intrusions demonstrated through zonation with respect to the causative intrusion and mineralized magmatic-hydrothermal transition textures. These may include miarolitic cavities, vein dykes, unidirectional solidification textures, brain rock, and granitefacies control on gold distribution. In addition, age dating in global examples has confirmed synchroneity between intrusions and mineralization.
• Mineralization is typically characterized by reduced, low sulfide (< 2%) ore assemblages including pyrite, pyrrhotite and arsenopyrite with magnetite less common and hematite rare. Proximal gold is typically high fineness ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining will be carried out using conventional open pit techniques with 10 m benches. An Owner mined open pit operation is planned with hydraulic shovels and mining trucks, including outsourcing of certain support activities such as blasting.

Production drilling of the 10 m benches will be by blast hole drill rigs with both rotary and down-the-hole (“DTH”) drilling capability. Blast holes are loaded with bulk emulsion. The majority of the loading in the pit will be carried out by two 16.5 m3 hydraulic face shovels, one 17 m3 hydraulic excavator, and one 10.5 m3 front-end wheel loader. The shovels and loader will be matched with a fleet of 92.5 t payload mine trucks.

Mining of the Tocantinzinho main pit will occur in three main phases preceded by a starter pit. Waste rock will be disposed of in two distinct waste dumps. The main waste dump will be located near the pit and the other waste dump will be located downstream of the flotation tailings dam. This second dump is an option to increase long-term safety factor of the dam. The open pit generates 163.4 Mt of waste rock and 48.7 Mt of ore, inclusive of historic tailings, over the life of mine (“LOM”) for an average LOM strip ratio of 3.36:1.

Mining activities are planned over a duration of 11 years which includes two (2) years of pre-production mining. Once the open pit is depleted and mining activities are stopped stockpile reclaim continues for another 1.5 years to continue feeding the mi ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. AnnualLOM
Gold koz 1751,834
All production numbers are expressed as metal in doré.

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
Daily processing rate  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
* According to 2021 study.
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Reserves at December 10, 2021:
Mineral reserve cut-off grade is 0.36 g Au/t for all materials.
Open pit mineral resources are reported at a cut-off grade of 0.30 g/t gold.

CategoryTonnage CommodityGradeContained Metal
Proven 17,973 kt Gold 1.46 g/t 842 koz
Probable 30,703 kt Gold 1.22 g/t 1,200 koz
Proven & Probable 48,676 kt Gold 1.31 g/t 2,042 koz
Measured 17,609 kt Gold 1.49 g/t 841 koz
Indicated 30,505 kt Gold 1.29 g/t 1,261 koz
Measured & Indicated 48,114 kt Gold 1.36 g/t 2,102 koz
Inferred 1,580 kt Gold 0.99 g/t 50 koz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold USD  ......  Subscription required&nbs
Total cash costs Gold USD  ......  Subscription required&nbs
All-in sustaining costs (AISC) Gold USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2021 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2021
OP mining costs ($/t mined) USD 2.36 *
OP mining costs ($/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
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 427
Refining and transportation $M USD  ......  Subscription required
G&A costs $M USD 151
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross 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
After-tax NPV @ 5% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusRef. Date
Compactor ....................... Subscription required Proposed Dec 10, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
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....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Existing Sep 12, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
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....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Dec 10, 2021
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Dec 10, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 10, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 40-F 2018
Corporate Presentation 2016
Form 40-F 2016
Other 2016
Other 2015
Technical Report 2011
Subscription required - Subscription is required.

News:

NewsDate
G Mining Ventures Completed Significant Milestones in 2022, Positioned for Growth in 2023 and Beyond January 10, 2023

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