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Canada
North Island Project

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 Location:
20 km SW from Port Hardy, British Columbia, Canada

  Project Contacts:
Suite 1200 – 1166 Alberni Street
Vancouver
British Columbia, Canada
V63 3Z3
Phone  ...  Subscription required
Fax1-604-669-2926
EmailEmail
WebsiteWeb
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Copper
  • Gold
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Mine Life22 years (as of Jan 1, 2021)
Northisle recently completed an update preliminary economic assessment for the North Island Project and is now focused on the advancement of the project through a pre feasibility study. The Company has commenced key critical path work activities amounting to approximately $1 million which support the immediate advancement of the North Island Project pre-feasibility study and permitting activities.
Latest NewsNorthisle Copper and Gold Announces C$2M Private Placement     March 1, 2023


Owners

Source: p. 16
CompanyInterestOwnership
NorthIsle Copper & Gold Inc. 100 % Indirect
The North Island Project is a 33,447-hectare contiguous block of 212 mixed legacy and cell mineral claims 100% owned by North Island Mining Corp., a wholly owned subsidiary of NorthIsle Copper and Gold Inc.

Contractors

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Deposit Type

  • Porphyry


Summary:

The Hushamu and Red Dog Deposits host porphyry copper-gold mineralization similar in grade, and in the case of Hushamu size, to the past producing Island Copper Mine located approximately 30 km to the east. Over the life of the operation, Island Copper produced 345 million metric tonnes of ore with average grades of 0.41% copper, 0.017% molybdenum, 0.19 g/t gold and 1.4 g/t silver (Perelló et al., 1995).

Mineralization identified at Hushamu and Red Dog is best characterized as calcalkalic porphyry deposit type. Calcalkalic porphyry deposits commonly form in sub-circular zones of brecciated and hydrothermally altered rock in and around the apex of a quartz diorite to quartz monzonite stock. The style of mineralization is largely dependent on depth of formation. Deposits developed in relatively high-level, subvolcanic environments are commonly associated with multiple dyke and breccia phases. However, deposits formed at greater depth are more often associated with broad zones of faulting in plutonic rocks (Pantelyev, 1995). The deposits form as concentrations of quartz, quartzsulphide and sulphide veinlets and stockworks and as sulphide disseminations in broad potassic and phyllic alteration zones. They are commonly surrounded by a halo of propylitic alteration. The principal economic minerals are chalcopyrite, molybdenite, lesser bornite and trace gold or electrum. Pyrite is an important constituent, particularly in the propylitic alteration zone.

Five ma ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mine plan was developed to mine Red Dog concurrently with Hushamu in the early years of the mine life until Red Dog Resources were depleted. The assumed processing rate is 75,000 t/d. The overall mining rate peaks at 64 million t/a in the initial years, averaging 54 million t/a over the first 12 years of the total mine life of 22 years.

The Hushamu and Red Dog open pits will be conventional truck and shovel operations utilizing 220 tonne class trucks and electric hydraulic front shovels and rotary drills. The bench height at Hushama will be 15 m and at Red Dog it will be 10 m. Road allowances have been made to 34 m width. Single benching has been applied at Hushamu and double benching has been applied at Red Dog. Geotechnical berms of 20 m width have been located on the high wall at Hushamu. Primary crushers will be located adjacent to each pit. Ore will be conveyed to the plant site at Hushamu.

The crest of the pit is at 645 m elevation and the pit bottom is -20 m elevation. The overall high wall slope is 42 degrees. The overall final pit dimensions are 2,300 m in length by 1,275 m in width.

The pit design bottom is at 240 m elevation and the pit crest is at 440 m elevation. Overall dimensions are 780 m length by 470 m width. Access to the pit will be from the east where the primary crusher will be located. This pit will be developed in a single phase.

The Hushamu open pit will be developed in 4 phases. A haulage road will rem ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Copper Concentrate kt 3,826
Copper Payable metal M lbs 2,035
Copper Metal in copper conc. M lbs 962,109
Gold Payable metal koz  ......  Subscription required
Gold Metal in copper conc. koz  ......  Subscription required  ......  Subscription required
Molybdenum Concentrate kt  ......  Subscription required
Molybdenum Payable metal M lbs  ......  Subscription required
Molybdenum Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required

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 mining rate  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at February 4, 2021:
Resource Estimate at a 0.10% Cu Cut-off

CategoryTonnage CommodityGradeContained Metal
Indicated 527,344 kt Copper 0.2 % 2.35 B lbs
Indicated 527,344 kt Gold 0.24 g/t 4.04 M oz
Indicated 527,344 kt Molybdenum 0.008 % 88.2 M lbs
Indicated 527,344 kt Rhenium 0.31 ppm 165.5 t
Indicated 527,344 kt Copper Equivalent 0.41 % 4.74 B lbs
Inferred 417,272 kt Copper 0.15 % 1.38 B lbs
Inferred 417,272 kt Gold 0.18 g/t 2.42 M oz
Inferred 417,272 kt Molybdenum 0.006 % 54.93 M lbs
Inferred 417,272 kt Rhenium 0.29 ppm 120.14 t
Inferred 417,272 kt Copper Equivalent 0.31 % 2.83 B lbs

Commodity Production Costs:

CommodityAverage
All-in sustaining costs (AISC) Copper Equivalent  ......  Subscription required&nbs
All-in sustaining costs (AISC) Copper  ......  Subscription required *†
C1 cash costs Copper  ......  Subscription required *†
Assumed price Rhenium  ......  Subscription required *
Assumed price Molybdenum  ......  Subscription required *
Assumed price Copper  ......  Subscription required *
Assumed price Gold  ......  Subscription required *
* According to 2021 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2021
OP mining costs ($/t milled) CAD 3.47 *
Processing costs ($/t milled) CAD  ......  Subscription required
G&A ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Equipment leasing costs $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Closure costs $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 3,317
G&A costs $M CAD 229.6
Total OpEx $M CAD  ......  Subscription required
Mining Taxes $M CAD  ......  Subscription required
Income Taxes $M CAD  ......  Subscription required
Royalty payments $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
Net Income (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 0% $M CAD  ......  Subscription required
Pre-tax NPV @ 5% $M CAD  ......  Subscription required
Pre-tax NPV @ 10% $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $M CAD  ......  Subscription required
After-tax NPV @ 0% $M CAD  ......  Subscription required
After-tax NPV @ 5% $M CAD  ......  Subscription required
After-tax NPV @ 10% $M CAD  ......  Subscription required
After-tax NPV @ 8% $M CAD  ......  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.

Pipelines
TypeMaterialDiameterLengthDescription


Proposed Heavy Mobile Equipment as of February 4, 2021:
HME TypeModelSizeQuantityLeased or
Contractor
Cable reel truck ....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 4, 2021
....................... Subscription required ....................... Subscription required Subscription required Feb 4, 2021
....................... Subscription required ....................... Subscription required Subscription required May 19, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 19, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
Preliminary Economic Assessment 2017
Subscription required - Subscription is required.

News:

NewsDate
Northisle Copper and Gold Announces C$2M Private Placement March 1, 2023

Subscription required - Subscription is required.

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