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Argentina
Taguas Project

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 Location:
293 km W from La Rioja, Argentina

  Project Contacts:
70 York Street Suite 1710
Toronto
Ontario, Canada
M5J 1S9
Phone  ...  Subscription required
Fax416-369-1402
EmailEmail
WebsiteWeb
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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life9.2 years (as of Jan 1, 2021)
The Pre-Feasibility Study is expected to be completed by end of the first quarter of fiscal 2023.


Owners

Source: p. 16
CompanyInterestOwnership
Orvana Minerals Corp. 100 % Indirect
The Taguas Heap Leach Project, located in San Juan Province, Argentina, is 100% owned by Orvana Argentina, S.A. (Orvana Argentina), a wholly-owned subsidiary of Orvana Minerals Corp.

Contractors

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Deposit Type

  • Epithermal


Summary:

The Taguas Property is host to a high-sulfidation epithermal gold-silver system hosted in altered tertiary age rhyolite volcaniclastic rocks. Supergene-oxidized gold-silver mineralization occurs on the south half of the Property. The oxide gold-silver mineralization consists of sub-vertical, northeast striking mineralized structures in an envelope of lower grade mineralization. The high grade zones consist of relatively continuous mineralization with gold grades ranging from 0.2 g/t Au to over 4.0 g/t Au and 10 g/t Ag to over 50 g/t Ag. Oxidation extends from surface to approximately 100m – 200m below surface.

Taguas consists of three gold-silver deposits:
• Leonor Vein at Cerro Silla Sur;
• Campamento Vein at Cerro Campamento;
• The gold-silver mineralization at Cerros Taguas.

The present PEA refers only to this oxidized gold-silver mineralization occurring near surface in Cerros Taguas.

Cerro Silla Sur
Cerro Silla Sur contains a northeast trending and steeply dipping (to the northwest) quartz-pyrite-enargite vein called Leonor. The central portion of the Leonor vein has returned grades of 7 to 42 g/t gold, up to 330 g/t silver and 0.1 to 5 % copper over drill intersections of less than 1 m to 7 m (Hedenquist, 2012). The mineralogical characteristics of the Leonor Vein are consistent with it being of the intermediatesulfidation type as evidenced by increasing amounts of chalcopyrite relative to enargite. Such intermediate- ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

A preliminary mine plan for the Cerros Taguas oxide material is focused on a main and secondary mine areas, mined through consecutive mining phases or pushbacks.

The mining method proposed for the Taguas Project is conventional truck and shovel open pit mining.

The mine plan will process 5.5 Mt/year with a peak total mining rate of 14.0 Mt/y in Years 2 to 4. The 6-month pre production period requires the mining of 2.4 Mt of total material to expose sufficient mineralized material to start commercial production in Year 1.

The total mined waste considers two main destinations for the material, the main east waste storage area to the east of the pit and the west waste storage area to the west of the south pit. The mined leach material will be hauled to the primary crusher for direct tipping. Low grade material will be mined and hauled to a stockpile located between the pit and the plant area until Year 7. This material will be re-handled and will become part of the plant feed in the later years.

The mine is scheduled to operate seven days per week or 365 days per year. Each day will consist of two 12-hour shifts. Four mining crews will rotate to cover the operation.

Pit Design
The bench configuration used for the mine design:
Inter-ramp angle (IRA): 45°;
Bench angle: 65°;
Bench height: 5m;
Berm width: 3m;
Max slope height: 100m;
Catch berm: 10m;
Ramp width: 13m;
Ramp gradient: 10 ........


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 doré oz 47,000430,320
Silver Metal in doré oz  ......  Subscription required  ......  Subscription required
Gold Equivalent Payable metal koz  ......  Subscription required
Gold Equivalent Metal in doré koz  ......  Subscription required  ......  Subscription required

Operational Metrics:

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

Reserves at June 30, 2021:
The PEA is based on the oxide portion of Cerros Taguas, excluding Cerros Taguas sulfides and all resources from Cerro Campamento and Cerro Silla Sur.
Cut-off grade is 0.25 g/t AuEq for oxide material.

CategoryOreTypeTonnage CommodityGradeContained Metal
Inferred Oxide 54,993 kt Gold 0.35 g/t 619 koz
Inferred Oxide 54,993 kt Silver 12.1 g/t 21,429 koz
Inferred Oxide 54,993 kt Gold Equivalent 0.493 g/t

Commodity Production Costs:

CommodityUnitsAverage
All-in sustaining costs (AISC) Gold USD  ......  Subscription required&nbs
Assumed price Silver 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 ($/t milled) USD 4.07 *
Processing costs ($/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
Working capital $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 256.7
Refining and transportation $M USD  ......  Subscription required
G&A costs $M USD 46.6
Total OpEx $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Net revenue (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 @ 8% $M USD  ......  Subscription required
After-tax NPV @ 0% $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 29, 2021:
HME TypeSizeQuantityLeased or
Contractor
Backhoe ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 16, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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