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Argentina
Diablillos Project

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 Location:
149 km SW from Salta, Argentina

  Project Contacts:
220 Bay St, Suite 550
Toronto
Ontario, Canada
M5J 2W4
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  • Overview
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  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • Silver
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life16 years (as of Jan 1, 2022)
Latest NewsAbraSilver Intersects Highest Grade Silver Intercept of All-Time at Diablillos: 12,581 g/t Silver and 44.5 g/t Gold (16,225 g/t AgEq) Over 1 Metre     January 17, 2023


Owners

Source: p. 21
CompanyInterestOwnership
AbraSilver Resource Corp. 100 % Indirect
Huayra is now a wholly owned subsidiary of AbraSilver, and AbraSilver holds indirect ownership of the Project through Huayra.

Contractors

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Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

The deposits at Diablillos, are high-sulphidation epithermal silver-gold deposits, derived from activity of hydrothermal fluids in a relatively shallow environment, often associated with fumaroles and hot springs. The principal mineralizing process is by convective flow of meteoric waters driven by remnant heat from intrusive activity at depth, often related to copper porphyry systems. The term “high-sulphidation” refers to the conversion of magmatic SO2 in aqueous solution into H2SO4 and H2S resulting in a highly acidic environment responsible for the diagnostic assemblage of alteration facies typically seen in these deposits. Mineral occurrences are structurally and hydrostatically controlled, with deposition occurring as open space filling at or near the level at which boiling occurs. As such, they characteristically subtend a limited vertical range, except where cyclical healing and failure of fractures results in up and down migration of the boiling zone.

MINERALIZATION
There are several mesothermal, and epithermal precious and base metal occurrences situated along the trend of the Diablillos - Cerro Galán fault zone within the northern and central Puna, including Diablillos, Incahuasi, Cóndor Yacu, Inca Viejo, and Centenario. Many of the mineral occurrences are spatially, and probably genetically, related to small Tertiary stocks and extrusive domes that are usually hydrothermally altered with disseminated and vein-hosted lead, zinc, silver, and gold (± ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The proposed Diablillos Project consists of open pit mining at the Oculto deposit, which has 18 months pre-stripping and sixteen years of production at a strip ratio of 3.6. Total material moved will be 17 Mtpa during initial stripping decreasing to 3 Mtpa at the end of the mine life. The open pit is designed to feed the processing plant at 7,000 tpd.

The Oculto deposit is considered for open pit mining to be carried out by contractor as a conventional truck and shovel operation. Contract mining was considered over owner operations to accommodate variable annual material movement quantities and flexibility in mobile mining equipment fleet sizes. This option also reduces up-front capital expenditures associated with mobile mining equipment purchases.

It is contemplated that the mining contractor would undertake the following activities:
• Drilling performed by conventional hydraulic production drills.
• Blasting using a downhole delay initiation system.
• Loading and hauling performed with trucks and shovels.
• Production support using bulldozers, graders, and water trucks.

AbraSilver would supervise mining operations with its own employees including mining engineers, geologists, surveyors, and support staff. The rock mass at Oculto has been considered to require drilling and blasting. It should however be noted that unconsolidated scree will represent a material amount of early stripping material. As this will not require d ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. AnnualLOM
Silver koz 4,20063,803
Gold koz  ......  Subscription required  ......  Subscription required
Silver Equivalent M oz  ......  Subscription required
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Daily ore mining rate  ......  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
Annual ore mining rate  ......  Subscription required
* According to 2022 study.
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Reserves at September 8, 2021:
The Mineral Resource is reported inside a whittle pit shell with a cut-off grade of 35 g/t silver equivalent.

CategoryTonnage CommodityGradeContained Metal
Measured 8,235 kt Silver 124 g/t 32,701 koz
Measured 8,235 kt Gold 0.98 g/t 259 koz
Indicated 32,958 kt Silver 54 g/t 57,464 koz
Indicated 32,958 kt Gold 0.7 g/t 744 koz
Measured & Indicated 41,193 kt Silver 68 g/t 90,165 koz
Measured & Indicated 41,193 kt Gold 0.76 g/t 1,002 koz
Inferred 2,884 kt Silver 34 g/t 3,181 koz
Inferred 2,884 kt Gold 0.7 g/t 66 koz

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Silver Equivalent USD  ......  Subscription required *†
Total cash costs Gold Equivalent USD  ......  Subscription required *†
All-in sustaining costs (AISC) Silver Equivalent USD  ......  Subscription required *†
All-in sustaining costs (AISC) Gold Equivalent USD  ......  Subscription required *†
Assumed price Silver USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
† Net of By-Product.
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Operating Costs:

Units2022
OP mining costs ($/t milled) USD 12.6 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
* According to 2022 study.
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2022 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
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 5% $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 January 13, 2022:
HME TypeModelSizeQuantityLeased or
Contractor
ANFO Loader ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 13, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jan 31, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
Preliminary Economic Assessment 2018
Press Release 2018
Technical Report 2016
Technical Report 2009
Subscription required - Subscription is required.

News:

NewsDate
AbraSilver Intersects Highest Grade Silver Intercept of All-Time at Diablillos: 12,581 g/t Silver and 44.5 g/t Gold (16,225 g/t AgEq) Over 1 Metre January 17, 2023
AbraSilver Intersects New High-Grade Feeder Structure in Southwest Zone at Diablillos; 871 g/t AgEq over 27m, and 522 g/t AgEq over 36m January 10, 2023
AbraSilver Reports Multiple Wide Silver Drill Intercepts, Including 103 Metres Grading 139 g/t Silver Near-Surface in New Southwest Zone at Diablillos December 15, 2022

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