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Peru
Antilla Project

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 Location:
10 km W from Huaquirca, Peru

  Project Contacts:
Centro Empresarial Pardo y Aliaga Av. Pardo y Aliaga No. 699, Oficina 803 San Isidro
Lima
Peru
Phone  ...  Subscription required
Fax+51-1-628-5979
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life17 years (as of Jan 1, 2018)
Latest NewsPanoro Minerals Reports Positive Preliminary Economic Assessment for Antilla Copper Project Heap Leach & SX/EW Operation     May 15, 2018


Owners

Source: p. 26
CompanyInterestOwnership
Panoro Minerals Ltd. 100 % Indirect
Panoro Apurimac S.A. 100 % Direct
The project area comprises 12 mining concessions with a total area of 7,500 hectares. The
concessions are owned 100% by Panoro Apurimac S.A. a wholly-owned subsidiary of Panoro.

Deposit Type

  • Porphyry


Summary:

The mineralization identified to date on the property is consistent with a supergene enrichment
blanket associated with an Andean-type copper-molybdenum porphyry system.

The most important mineralization encountered to date on the property is a tabular body of fracturecontrolled and disseminated chalcocite and chalcopyrite with minor molybdenite-coated fractures overlain by a barren, leached zone of variable thickness. The tabular zone strikes 50 degrees and dips 20 degrees to the east over an area 1.2 kilometres long and 1.2 kilometres wide. The supergene chalcocite mineralization has a true thickness of 40 to 80 metres. Associated with the chalcocite mineralization is weak sericitization, chloritization, and silicification of arenite and quartzite. The strongest chalcocite mineralization is associated with brittle faults. Below the chalcocite mineralization, low-grade disseminated chalcopyrite, bornite, and molybdenite mineralization occurs. Altered, weakly-mineralized porphyritic felsic intrusives are associated with the hypogene mineralization. Unaltered, unmineralized porphyritic dikes cut the mineralization.

The most economically significant mineralization encountered to date on the property is fracturecontrolled and disseminated chalcocite. The chalcocite occurs as:

- Sooty or scaly coatings 1 millimetre wide, filled to partially open fractures.

- Sooty coatings on rock fragments and rock flour encountered in intense fracture or fault zones over widths of 1 to 10 metres.

- Selvages on sub-centimetre width quartz veinlets.

- Occasionally as disseminated grains or coating disseminated grains of primary chalcopyrite in zones of more intense fracturing and silicification.

Chalcocite is enriched in the secondary sulphide enrichment zone.

Molybdenite occurs in fine fractures and as grains within sub-centimetre wide quartz veinlets in the
primary sulphide, secondary sulphide and Main Porphyry.

Chalcopyrite occurs as disseminated grains and surface coatings along fractures and within quartz
veinlets. Disseminated grains were also observed. Chalcopyrite in concentrations of up to 1% occurs
in the Main Porphyry and in primary hypogene sulphide zones.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining operations proposed for the Antilla project are typical of open pit, truck-and-shovel mining methods for year round operations in a mountainous terrain.

The mine operations are organized into three departments: mine maintenance, technical services, and direct mining. Mine maintenance accounts for the supervision and planning of the mine maintenance activities. Technical services accounts for the technical support from mine engineering, planning, geology, and surveying functions. Direct mining accounts for the drilling, blasting, loading, hauling, and pit maintenance activities in the mine.

A conceptual level mining design, production schedule, and cost model were developed for the Antilla project. A series of pit optimizations were run using the resource block model, applying a range of metal prices and estimated costs for mining and processing. An ultimate pit limit was chosen from the optimized shell and the potentially mineable portion of the resource was estimated within the ultimate pit.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The proposed project includes a flotation processing plant with a design capacity of 40,000 tonnes/day. According to the conceptual production schedule, Supergene mineralization would be processed during the first half of the 24-year mine life with a transition after Year 11 to predominantly Primary Sulphide feed. Most Leach Cap material will be stockpiled until the end of the mine life for separate processing though the plant.

A possible process involves the following stages:
• Crushing/grinding to a P80 size of 100µm
• Bulk flotation of a copper-molybdenite concentrate
• Regrinding of the bulk concentrate prior to cleaning
• Conditioning with NaHS prior to copper molybdenite separation
• Three or more stages of molybdenite cleaning
• Tailings from molybdenite separation circuit is the final copper concentrate
• Thickening of both concentrates
• Filtering of both concentrates
• Drying of molybdenite concentrate before bagging

Recoveries & Grades:

CommodityParameterAvg. LOM
Copper Recovery Rate, %  ......  Subscription required
Copper Head Grade, % 0.43
Subscription required - Subscription is required.

Projected Production:

CommodityUnitsLOM
Copper k lbs 819,314
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics
Daily milling capacity  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Annual milling capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
* According to 2018 study.
Subscription required - Subscription is required.

Reserves at December 31, 2016:

CategoryTonnage CommodityGrade
Indicated 291,800 kt Copper 0.34 %
Indicated 291,800 kt Molybdenum 0.01 %
Indicated 291,800 kt Copper Equivalent 0.36 %
Inferred 90,500 kt Copper 0.26 %
Inferred 90,500 kt Molybdenum 0.007 %
Inferred 90,500 kt Copper Equivalent 0.28 %

Commodity Production Costs:

CommodityUnits2018
Total cash costs Copper USD  ......  Subscription required
Assumed price Molybdenum USD  ......  Subscription required
Assumed price Copper USD  ......  Subscription required
Subscription required - Subscription is required.

Operating Costs:

Units2018
OP mining costs ($/t mined) USD 1.63 *
Processing costs ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2018 study.
Subscription required - Subscription is required.

2018 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial 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 552.7
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Gross 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 @ 5% $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
Pre-tax NPV @ 7.5% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 7.5% $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.

Proposed Heavy Mobile Equipment as of June 16, 2016:
HME TypeSizeQuantity
Dozer 306 kW 6
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 3
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 4
....................... Subscription required ....................... Subscription required 14
....................... Subscription required ....................... Subscription required 2
Subscription required - Subscription is required.

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 2, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required Feb 2, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2018
................................... Subscription required 2018
Preliminary Economic Assessment 2016
Subscription required - Subscription is required.

News:

NewsDate
Panoro Minerals Reports Positive Preliminary Economic Assessment for Antilla Copper Project Heap Leach & SX/EW Operation May 15, 2018

Subscription required - Subscription is required.

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