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Papua New Guinea
Yandera Project

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 Location:
95 km SW from Madang, Papua New Guinea
  Project Contacts:
Guard Dog Complex Komoklon Cres, Newtown
PO Box 12, Diwai Post
Madang
Papua New Guinea
511
Phone  ...  Subscription required
Fax+675-422-1723
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StagePre-Feasibility
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life20 years (as of Jan 1, 2019)
The Yandera Project is one of the largest, undeveloped copper deposits in the world.

Owners

Source: p. 1-2
CompanyInterestOwnership
Freeport Resources Inc. 100 % Indirect
In August 2021, Freeport Resources Inc. completed the acquisition of Carpo Resources Inc. by acquiring all of the outstanding share capital from the vendors. Carpo is a privately held company that controls Era Resources Inc., which itself controls an application for the renewal of an exploration license located in Papua New Guinea, commonly known as the “Yandera Copper Project”.

Era Resources Inc. is a mineral resources company focused on the development of its flagship Yandera Copper Project. Era owns 100% of Yandera Mining Company Limited (YMCL) registered in Papua New Guinea (PNG); YMCL owns 100% of the Yandera Copper Project.

Contractors

Subscription required - Subscription is required.

Deposit Type

  • Porphyry
  • Breccia pipe / Stockwork

Summary:

In general, terms, the mineral system could be classified as a porphyry copper deposit. The system has many of the characteristics of a typical porphyry system, including an association with porphyritic phases of dioritic to granodioritic intrusive phases and typical alteration assemblages associated with potassic, phyllic and propylitic altered rocks. However, there are some key differences between Yandera and typical zoned porphyry systems, including strong structural controls on mineralization and an association between phyllic alteration and elevated copper grades.

The porphyry system at Yandera is hosted in late intrusive phases and structures that disrupt the Bismarck granodiorite. Mineralization appears locally controlled by porphyritic dacite and associated intrusive breccia bodies. The occurrence of these intrusive bodies and later alteration appears to be controlled by a strong northwest trend that intersects and/or is intersected by north and northeasterly trends. Higher-grade copper mineralization appears to be concentrated near the intersection of these trends, such as at Imbruminda, within broader zones of potassic and phyllic alteration.

A number of younger igneous units, including a later porphyritic quartz diorite (POK), porphyritic dacite (PDA), andesite (PAN), microdiorite (POM), and some leucocratic quartz diorite (PLQ), intrude the volumetrically larger quartz diorite porphyry (POD) phases at the property. The younger igneous phases ........

Mining Methods

  • Truck & Shovel / Loader

Summary:

Conventional open pit mining methods consisting of drilling, blasting, loading and hauling will be employed at Yandera Mine. Contractor mining was determined to be more viable than an owner-operated fleet during the financial analysis of the PFS.

The primary mining activities will be supported by ancillary activities including the following:
- bench preparation;
- pit dewatering;
- dust suppression;
- haul road construction and maintenance; and
- General housekeeping.

The mine was designed to produce 30Mt of above cut-off grade sulphide ore per annum. An additional 3Mtpa will be processed from the below cut-off grade sulphide ore stockpile or from the oxide ore stockpile when the sulphide ore sources are insufficient. A total of 533,185,430t ore is produced from the production schedule. A total of 705,286,358t waste rock will be produced over the life of the mine. The tonnage that will be placed in the waste rock dump amounts to 531,364,993t and the remaining tonnages (173,921,366t) will be backfilled into the Gremi and Omora pits.

The following assumptions were made for the proposed slope design:
- Slope design is within FoS guidelines for major structures.
- Pre-spit drilling and buffer blasting will occur along all final pit slopes.
- General good blasting practices will be followed in the pit and especially close to final pit walls.
- Slope stability monitoring systems will be installed.
- ........

Crushing and Grinding
Source: Subscription required

- subscription is required.

Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

Projected Production:

CommodityProductUnitsAvg. Annual
Copper Metal in copper conc. M lbs 220
Copper Concentrate kt 319
Molybdenum Concentrate kt  ......  Subscription required

Operational Metrics:

Metrics
Stripping / waste ratio 1.36 *
Waste tonnes, LOM 705,286,358 t *
Ore tonnes mined, LOM 533,185,430 t *
Total tonnes mined, LOM 1,238,471,788 t *
Annual processing capacity 30 Mt *
Annual ore mining rate 33 Mt *
Mining scale, tpd 177,000 t
* According to 2017 study.

Reserves at November 27, 2017:
Resources are reported using a 0.15 % CoG on an Equivalent Copper value that included process recoveries for metal.
The CuEq was calculated using the formula CuEq = Cu% + (Mo% * 2.82) + (Au ppm * 0.44).

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable Total 540,497 kt Copper 0.3351 %
Probable Total 540,497 kt Molybdenum 0.0102 %
Probable Total 540,497 kt Gold 0.0713 ppm
Measured & Indicated Sulphide 663,153 kt Copper 0.33 % 2,175 kt
Measured & Indicated Oxide 63,733 kt Copper 0.34 % 219 kt
Measured & Indicated Total 726,886 kt Copper 0.33 % 2,393 kt
Measured & Indicated Sulphide 663,153 kt Molybdenum 0.01 % 69 kt
Measured & Indicated Oxide 63,733 kt Molybdenum 0.01 % 4 kt
Measured & Indicated Total 726,886 kt Molybdenum 0.01 % 73 kt
Measured & Indicated Sulphide 663,153 kt Gold 0.07 ppm 1,424 koz
Measured & Indicated Oxide 63,733 kt Gold 0.08 ppm 168 koz
Measured & Indicated Total 726,886 kt Gold 0.07 ppm 1,592 koz
Measured & Indicated Sulphide 663,153 kt Copper Equivalent 0.39 % 2,564 kt
Measured & Indicated Oxide 63,733 kt Copper Equivalent 0.38 % 242 kt
Measured & Indicated Total 726,886 kt Copper Equivalent 0.39 % 2,805 kt
Inferred Sulphide 208,665 kt Copper 0.29 % 615 kt
Inferred Oxide 18,443 kt Copper 0.26 % 48 kt
Inferred Total 227,108 kt Copper 0.29 % 663 kt
Inferred Sulphide 208,665 kt Molybdenum 0.01 % 11 kt
Inferred Oxide 18,443 kt Molybdenum 0 % 1 kt
Inferred Total 227,108 kt Molybdenum 0 % 11 kt
Inferred Sulphide 208,665 kt Gold 0.04 ppm 241 koz
Inferred Oxide 18,443 kt Gold 0.03 ppm 19 koz
Inferred Total 227,108 kt Gold 0.04 ppm 260 koz
Inferred Sulphide 208,665 kt Copper Equivalent 0.32 % 677 kt
Inferred Oxide 18,443 kt Copper Equivalent 0.27 % 51 kt
Inferred Total 227,108 kt Copper Equivalent 0.32 % 728 kt

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Copper USD 1.99 / lb *  
Assumed price Molybdenum USD 7.14 / lb *  
Assumed price Copper USD 3.23 / lb *  
Assumed price Gold USD 1,295 / oz *  
* According to 2017 study / presentation.

Operating Costs:

Units2017
OP mining costs ($/t mined) USD 2.53 *
OP mining costs ($/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 2017 study.
Subscription required - Subscription is required.

2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Pre-tax NPV @ 7.8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.
Pipelines
Source: Subscription required

Proposed Heavy Mobile Equipment as of November 27, 2017:
HME TypeModelSizeQuantityLeased or
Contractor
Backhoe loader ....................... Subscription required ....................... Subscription required Leased
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Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2017
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2017
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2017
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Financial Review 2022
Management Discussion & Analysis 2022
................................... Subscription required 2021
Pre-Feasibility Study Report 2017
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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