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Canada
Kwanika-Stardust Project

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 Location:
140 NW from Fort St. James, British Columbia, Canada

  Project Contacts:
Suite 1900, 1055 West Hastings Street
Vancouver
British Columbia, Canada
V6E 2E9
Phone  ...  Subscription required
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  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit & Underground
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Block caving
Mine Life15 years (as of Jan 1, 2017)
The Stardust deposit forms a key part of the Kwanika-Stardust project as outlined in the recent PEA, the results of which were released on January 5, 2023.
Latest NewsNorthWest Copper Files Kwanika-Stardust Preliminary Economic Assessment Report on Sedar     February 21, 2023


Owners

Source:
CompanyInterestOwnership
NorthWest Copper Corp. 100 % Indirect
On September 7, 2022, NorthWest Copper Corp. completed the third issuance of Consideration Shares (“Tranche 3”) to POSCO International Corporation (“POSCO”) pursuant to the previously announced agreement whereby NorthWest agreed to purchase POSCO’s approximately 31% interest in Kwanika Copper Corporation (“KCC”) for total consideration of C$11 million (the “Transaction”), payable in shares of NorthWest (the “Consideration Shares”). KCC is a British Columbia corporation which owns 100% of the Kwanika project. Following the completion of the issuance of all Consideration Shares, KCC has become a wholly-owned subsidiary of NorthWest, and NorthWest now owns a 100% interest in the Kwanika project.

Contractors

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Deposit Type

  • Porphyry
  • Vein / narrow vein


Summary:

The Kwanika Project consists of two mineralized areas: Central Zone and South Zone. In the Central Zone the most economically significant intrusive body is a north-northeast trending monzonite stock that dips shallowly to steeply to the west. The intrusion has a strike length of nearly 1.3km and a thickness of 50m to 350m. The high-grade copper- gold mineralization (>0.6% copper equivalent (CuEq) in the Central Zone is dominantly hosted within, and immediately adjacent to, the monzonite intrusive. Monzonite has also been intersected at depth in the western and southwestern parts of the Central Zone and is thought to connect to the sill-like body in the central part of the deposit, suggesting the possibility of deep Central Zone mineralization.

The South Zone occurs within a fault bounded sequence of strongly altered intrusive rocks of alkalic to intermediate composition. The host lithologies occur within a north-south trending structural corridor. This structural corridor is bounded by the West Fault to the west and by a similar fault zone termed the East Fault along the eastern boundary of the corridor. Coincident chargeability and resistivity anomalies form a geophysical domain that represents the fault- bounded South Zone corridor. This variably mineralized domain is 2,900m long and up to 500m wide.

Copper and gold mineralization in the Central Zone at Kwanika occurs primarily in potassically and albitically altered lithologies. Alteration and minera ........


Mining Methods

  • Truck & Shovel / Loader
  • Block caving


Summary:

A production schedule based on a 15,000t/d mill feed rate has been developed for the Kwanika Project. The mine production is based on both Open Pit and underground Block Cave mining methods. The Life of Mine (LoM) plan starts mining two open pit phases in Central Zone while access and level development are established for the Block Cave beneath the open pit in the Central Zone. The final stage of mining is from 3 open pit phases in South Zone.

This is a contractor-operated Open Pit mining fleet and underground development mining fleet with an owner’s fleet planned for underground mucking and hauling. Contractor mining operating costs have been included. Capital costs for the contractor fleets are included in the operating cost. The purchase cost of the underground loaders and trucks are included as a capital expense.

Mining dilution for the open pit is based on whole block dilution from the grade interpolation with 2% additional dilution on ore/waste boundaries. In dilution material, the grade is conservatively set at zero. In future studies and during operations, the dilution will be assigned grades marginally below the cut-off grade at the cut-off boundary.

An allowance for a mining loss of 5% has been used to account for material lost at the ore/waste boundary, misdirected loads, and spillage during hauling.

The pit delineated resources are calculated from the 3DBM within the detailed pit designs using an NSR cut-off of $11.30/to ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. AnnualLOM
Copper k lbs 40,042600,635
Gold koz  ......  Subscription required  ......  Subscription required
Silver koz  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics
Daily milling rate 15,000 t *
Stripping / waste ratio 1.7 *
Daily ore mining rate 15,000 t *
Ore tonnes mined, LOM 78,855 kt *
Tonnes milled, LOM 78,855 kt *
Annual milling rate 5,401 kt *
* According to 2017 study.

Reserves at December 14, 2018:
Pit-Constrained Sensitivity Analysis at Various Cut-Off Grades. Underground Sensitivity Analysis within 0.40% CuEq Confining Shape. The cut-offs are based on prices of US$3.25/lb of copper, US$1,350/oz of gold, US$17/oz of silver and assumed recoveries of 91% for copper, 75% for gold, 75% for silver.

CategoryOreTypeTonnage CommodityGradeContained Metal
Measured In-Situ (OP) 24.2 Mt Copper 0.34 % 179 M lbs
Measured In-Situ (UG) 18.7 Mt Copper 0.36 % 151 M lbs
Measured Total 42.9 Mt Copper 0.35 % 330 M lbs
Measured In-Situ (OP) 24.2 Mt Gold 0.33 g/t 254 koz
Measured In-Situ (UG) 18.7 Mt Gold 0.4 g/t 239 koz
Measured Total 42.9 Mt Gold 0.36 g/t 493 koz
Measured In-Situ (OP) 24.2 Mt Silver 1.07 g/t 833 koz
Measured In-Situ (UG) 18.7 Mt Silver 1.15 g/t 692 koz
Measured Total 42.9 Mt Silver 1.1 g/t 1,525 koz
Measured In-Situ (OP) 24.2 Mt Copper Equivalent 0.51 %
Measured In-Situ (UG) 18.7 Mt Copper Equivalent 0.58 %
Measured Total 42.9 Mt Copper Equivalent 0.54 %
Indicated In-Situ (OP) 80.4 Mt Copper 0.2 % 360 M lbs
Indicated In-Situ (UG) 100.2 Mt Copper 0.29 % 634 M lbs
Indicated Total 180.6 Mt Copper 0.25 % 994 M lbs
Indicated In-Situ (OP) 80.4 Mt Gold 0.18 g/t 454 koz
Indicated In-Situ (UG) 100.2 Mt Gold 0.27 g/t 884 koz
Indicated Total 180.6 Mt Gold 0.23 g/t 1,338 koz
Indicated In-Situ (OP) 80.4 Mt Silver 0.69 g/t 1,784 koz
Indicated In-Situ (UG) 100.2 Mt Silver 0.92 g/t 2,964 koz
Indicated Total 180.6 Mt Silver 0.82 g/t 4,748 koz
Indicated In-Situ (OP) 80.4 Mt Copper Equivalent 0.3 %
Indicated In-Situ (UG) 100.2 Mt Copper Equivalent 0.44 %
Indicated Total 180.6 Mt Copper Equivalent 0.38 %
Measured & Indicated In-Situ (OP) 104.6 Mt Copper 0.23 % 540 M lbs
Measured & Indicated In-Situ (UG) 118.9 Mt Copper 0.3 % 784 M lbs
Measured & Indicated Total 223.6 Mt Copper 0.27 % 1,324 M lbs
Measured & Indicated In-Situ (OP) 104.6 Mt Gold 0.21 % 708 koz
Measured & Indicated In-Situ (UG) 118.9 Mt Gold 0.29 g/t 1,123 koz
Measured & Indicated Total 223.6 Mt Gold 0.25 g/t 1,831 koz
Measured & Indicated In-Situ (OP) 104.6 Mt Silver 0.78 g/t 2,617 koz
Measured & Indicated In-Situ (UG) 118.9 Mt Silver 0.96 g/t 3,656 koz
Measured & Indicated Total 223.6 Mt Silver 0.87 g/t 6,273 koz
Measured & Indicated In-Situ (OP) 104.6 Mt Copper Equivalent 0.35 %
Measured & Indicated In-Situ (UG) 118.9 Mt Copper Equivalent 0.46 %
Measured & Indicated Total 223.6 Mt Copper Equivalent 0.41 %
Inferred In-Situ (OP) 5.7 Mt Copper 0.16 % 20 M lbs
Inferred In-Situ (UG) 84.7 Mt Copper 0.17 % 319 M lbs
Inferred Total 90.4 Mt Copper 0.17 % 339 M lbs
Inferred In-Situ (OP) 5.7 Mt Gold 0.13 g/t 25 koz
Inferred In-Situ (UG) 84.7 Mt Gold 0.18 g/t 480 koz
Inferred Total 90.4 Mt Gold 0.17 g/t 504 koz
Inferred In-Situ (OP) 5.7 Mt Silver 0.65 g/t 119 koz
Inferred In-Situ (UG) 84.7 Mt Silver 0.6 g/t 1,634 koz
Inferred Total 90.4 Mt Silver 0.6 g/t 1,753 koz
Inferred In-Situ (OP) 5.7 Mt Copper Equivalent 0.23 %
Inferred In-Situ (UG) 84.7 Mt Copper Equivalent 0.27 %
Inferred Total 90.4 Mt Copper Equivalent 0.26 %

Commodity Production Costs:

CommodityAverage
C1 cash costs Copper 1.2 / lb *†  
Assumed price Copper 2.9 / lb *  USD
Assumed price Silver 19 / lb *  USD
Assumed price Gold 1,270 / lb *  USD
* According to 2017 study / presentation.
† Net of By-Product.

Operating Costs:

Units2017
OP mining costs ($/t mined) CAD 2.97 *
UG mining costs ($/t mined) CAD  ......  Subscription required
OP mining costs ($/t milled) CAD  ......  Subscription required
UG mining costs ($/t milled) CAD  ......  Subscription required
Combined mining costs ($/t milled) CAD  ......  Subscription required
Processing costs ($/t milled) CAD  ......  Subscription required
G&A ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2017 study.
Subscription required - Subscription is required.

2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
UG OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 0.7
G&A costs $M CAD 0.2
Total OpEx $M CAD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 5% $M CAD  ......  Subscription required
Pre-tax NPV @ 10% $M CAD  ......  Subscription required
After-tax NPV @ 5% $M CAD  ......  Subscription required
After-tax NPV @ 10% $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.


Proposed Heavy Mobile Equipment as of April 19, 2017:
HME TypeSizeQuantityLeased or
Contractor
ANFO Loader ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required
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....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 19, 2017
....................... Subscription required ....................... Subscription required Subscription required Apr 19, 2017
....................... Subscription required ....................... Subscription required Subscription required Jul 24, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Preliminary Economic Assessment 2023
Management Discussion & Analysis 2022
................................... Subscription required 2021
................................... Subscription required 2019
Preliminary Economic Assessment 2017
Subscription required - Subscription is required.

News:

NewsDate
NorthWest Copper Files Kwanika-Stardust Preliminary Economic Assessment Report on Sedar February 21, 2023
NorthWest Copper Reports Multiple Long Intersections From Step Out Drilling at Kwanika Central Zone - Results Extend Mineralization North of Block Model February 15, 2023

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