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Argentina
Navidad Project

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 Location:
300 NW from Trelew, Argentina

  Project Contacts:
Avenida Cordoba 836, 7th Floor
Buenos Aires
Argentina
Phone  ...  Subscription required
Fax+54-11-5533-8768
WebsiteWeb
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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Silver
  • Lead
  • Copper
Mining Method
  • Truck & Shovel / Loader
Mine Life17 years (as of Jan 1, 2010)
Navidad Project in Argentina is the world’s largest undeveloped silver deposit.

The Company has suspended project development activities at Navidad as a result of uncertainty over the zoning, regulatory and tax laws. The Company remains committed to the development of Navidad and to contributing to the positive economic and social development of the province of Chubut upon the adoption of a favorable legislative framework.


Owners

Source: p. 86
CompanyInterestOwnership
Pan American Silver Corp. 100 % Indirect
Ownership Tree

Contractors

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Deposit Type

  • Epithermal
  • Volcanic hosted
  • Sediment-hosted


Summary:

Navidad mineralisation is epithermal, as demonstrated by widespread open space-filling crustiform and cockade textures in the gangue minerals (carbonate, barite) and sulphide assemblages. The abundance of base metals, combined with carbonate-rich gangue, suggests that the deposit is intermediate, rather than low, sulphidation in style. Typical high sulphidation sulphides and gangue minerals are absent, but there is rare late stage kaolinite and minor hydrothermal alunite that implies late ingress of a hypogene acid fluid.

In all of the Navidad deposits the gangue minerals are principally calcite with minor barite. Silica is less important and occurs mostly as chalcedony and late amethyst. Ore minerals recognizable with a hand lens include: native silver, clots of black sulphide comprising argentite/acanthite, discrete grains of sphalerite, galena, chalcopyrite, cuprite, bornite, native copper and copper carbonates (malachite, azurite). Similar styles of mineralisation and a similar paragenesis occur in most of the deposits. However, the proportion of sulphides varies considerably. Loma de La Plata is silver-rich, but is sulphide-poor and contains very low levels of lead, zinc and copper. Various pulses of mineralisation are observed, principally at Galena Hill.

The principal metal association is Ag-Pb. Other associations include Ag-Pb-Cu and Cu-Ag and, more rarely, Ag-Zn. Occasionally there is Ag only, or Cu-Pb-Zn or simply isolated occurrences of thes ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining will be done by conventional open cut mining methods with the ore and associated non-economic material being mined on 5 m high benches and the non-economic material only tonnage being mined on 10 m high benches. The ore and non-economic material will be drilled and blasted, then loaded into 150 t trucks by a combination of backhoe loaders (17.0 m3 bucket size) and hydraulic front shovels (23.2 m3). The mine equipment fleet has been sized to accomplish the following tasks:

- Drill and blast the ore and non-economic material tonnage on a combination of 5 and 10 m benches.
- Load ore and non-economic material using either the backhoes (ore and associated noneconomic material on 5 m benches) or the hydraulic shovels (non-economic material on 10 m benches).
- Haul the ore to the primary crusher or adjacent run of mine ore stockpile.
- Haul non-economic material to its final destination, including hauling non-economic material to the 7A tailing impoundment area (but not construction of the embankment).
- Construct and maintain all roads used by the mine equipment, including berms and ditches.
- Maintain all non-economic material storage locations.
- Clean up in active mining areas.
- Other activities as needed to maintain a good working environment in the mine areas.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Silver Metal in concentrate M oz 20276
Lead Concentrate kt  ......  Subscription required
Lead Metal in concentrate M lbs  ......  Subscription required
Copper Metal in concentrate t  ......  Subscription required
Copper Concentrate kt  ......  Subscription required

Operational Metrics:

Metrics
Daily milling capacity 15,000 t *
Daily ore mining rate 15,000 t *
Waste tonnes, LOM 418,089 kt *
Ore tonnes mined, LOM 89,445 kt *
Total tonnes mined, LOM 507,528 kt *
Tonnes milled, LOM 89,442 kt *
Annual milling capacity 5.48 Mt *
Annual ore mining rate 5.48 Mt *
* According to 2010 study.

Reserves at June 30, 2019:
Cut-off grade above a 50 g/t AgEQ.

The Mineral Resources as at 30 June, 2021 at Navidad mine project are unchanged from 30 June, 2019.

CategoryTonnage CommodityGradeContained Metal
Measured 15.4 Mt Silver 137 g/t 67.8 M oz
Measured 15.4 Mt Lead 1.44 %
Measured 15.4 Mt Copper 0.1 %
Indicated 139.8 Mt Silver 126 g/t 564.5 M oz
Indicated 139.8 Mt Lead 0.79 %
Indicated 139.8 Mt Copper 0.04 %
Inferred 45.9 Mt Silver 81 g/t 119.4 M oz
Inferred 45.9 Mt Lead 0.57 %
Inferred 45.9 Mt Copper 0.02 %

Commodity Production Costs:

CommodityUnits2022
Cash costs Silver USD 6.96 / oz *  USD
Assumed price Lead USD 1,950 / t *  USD
Assumed price Copper USD 6,500 / t *  USD
Assumed price Silver USD 18 / oz *  USD
* According to 2010 study / presentation.
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Operating Costs:

Units2022
OP mining costs ($/t mined) USD 1.52 *
OP mining costs ($/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 2010 study.
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2010 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
Income Taxes $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Net Income (LOM) $M USD  ......  Subscription required
After-tax NPV @ 0% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  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 14, 2010:
HME TypeModelSizeQuantity
Backhoe ....................... Subscription required ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2022
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Staff:

Total WorkforceYear
Subscription required 2010

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Year-end Mineral Reserves 2018
Preliminary Economic Assessment 2010
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