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Canada
Aley Project

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 Location:
178 km W from Fort St John, British Columbia, Canada

  Project Contacts:
15th Floor, 1040 West Georgia St.
Vancouver
British Columbia, Canada
V6E 4H1
Phone  ...  Subscription required
Fax778-373-4534
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Niobium
Mining Method
  • Truck & Shovel / Loader
Mine Life24 years (as of Jan 1, 2020)
The Company has determined that, in light of the Company’s current focus on Florence Copper and the Yellowhead Copper Project, and the Company’s assessment of the relative value currently attributed to each of the Company’s projects, the Company does not consider the Aley Project to be material at this time. The Company’s assessment of materiality could change and the Aley Project may again become material in the future.


Owners

Source: p. 13
CompanyInterestOwnership
Taseko Mines Ltd. 100 % Indirect
The Aley Property is 100% owned by Aley Corporation which is a wholly-owned subsidiary of Taseko Mines.

Contractors

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Deposit Type

  • Magmatic


Summary:

In the Aley deposit, niobium occurs in pyrochlore that formed as early-stage mineral precipitates in primary magma. Alteration of the dolomite carbonatite by unknown factors created the Nb bearing alteration minerals fersmite and columbite. The changes are believed to have occurred largely in situ, and as such there has been less scope for transport or concentration of Nb by secondary processes. The type of deposit is considered to be that of magmatic segregation.

The Aley Carbonatite complex intrudes Cambrian to Ordovician sedimentary rocks of the Kechika (limestone), Skoki (dolomite to volcaniclastics) and Road River Group formations (clastic sedimentary rocks). The intrusion is ovoid in plan view with a diameter of approximately 2 km and surrounded by a fenite aureole up to 500 m thick that has previously been mapped as “amphibolite” (Pride, Cominco Ltd., 1987) and “syenite” (Mäder, 1986). The intrusive contacts are parallel to bedding and lie at a uniform stratigraphic level near the base of the Kechika Formation. Three principal units within the carbonatite have been identified:

1) a volumetrically dominant fersmite- and pyrite-bearing dolomite-apatite carbonatite unit that forms the core of the sill;
2) a magnetite, pyrochlore, phlogopitebearing calcite-apatite carbonatite unit that forms the margins of the sill where it is in contact with the Kechika Formation; and
3) a banded magnetite-apatite unit in the dolomite core.

The ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Aley open pit will be mined by a conventional truck and shovel operation. Due to the production rate, location of the deposit and the width of the mining cuts, the equipment utilized in this operation will be approximately one third of the size of typical equipment found in today’s large open pit operations.

The production rate of 10,000 tpd ore was selected as a base case for project design and costing on the basis of balancing economies of scale and niobium market conditions.

Designs for the Aley pit phases use a fixed face slope angle of 65 degrees and safety berm widths of 10m for every two vertical 10m benches, for a standard inter-ramp slope angle of 46 degrees. Knight Piesold’s recommended inter-ramp pit slopes for different sectors of the pit are:
- 10m vertical benches, double benching configuration (safety berm every 20m);
- North Sector: 70 degree face angle, 50 degree inter-ramp angle, berm width of 9.5m;
- North-East Sector: 65 degree face angle, 48 degree inter-ramp angle, berm width of 9m;
- South-East Sector: 70 degree face angle, 50 degree inter-ramp angle, berm width of 9.5m;
- West Sector: 65 degree face angle, 45 degree inter-ramp angle, berm width of 11m.

The following parameters were used to drive the production schedule and equipment requirements:
- Annual mill feed of 3,650 ktpa is targeted based on 10,000 tonnes/day ore milling;
- Year 1 milling target of 7,500 tonnes/day;
- ........


Crushing and Grinding
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Processing

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Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Niobium Metal in alloy t 9,000187,600
Niobium Ferro-niobium t 14,000297,500

Operational Metrics:

Metrics
Stripping / waste ratio 0.5 *
Daily milling capacity 10 kt *
Daily ore mining rate 10,000 t *
Waste tonnes, LOM 44,329 kt *
Total tonnes mined, LOM 128,145 kt *
Tonnes milled, LOM 83,815 kt *
Annual milling capacity 3,650 kt *
* According to 2017 study.

Reserves at October 30, 2014:
Mineral Resources at a cut-off grade of 0.20% Nb2O5.
Mineral Reserves at a cut-off grade of 0.30% Nb2O5.

CategoryTonnage CommodityGrade
Proven 44,272 kt Nb2O5 0.52 %
Probable 39,543 kt Nb2O5 0.48 %
Proven & Probable 83,815 kt Nb2O5 0.5 %
Measured 112,651 kt Nb2O5 0.41 %
Indicated 173,169 kt Nb2O5 0.35 %
Measured & Indicated 285,820 kt Nb2O5 0.37 %
Inferred 144,216 kt Nb2O5 0.32 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Niobium USD 24 / kg *  
Assumed price Niobium USD 45 / kg *  
* According to 2017 study / presentation.

Operating Costs:

Units2017
OP mining costs ($/t mined) CAD 3.33 *
OP mining costs ($/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
Pre-Production capital costs $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
Total OpEx $M CAD  ......  Subscription required
Mining Taxes $M CAD  ......  Subscription required
Income Taxes $M CAD  ......  Subscription required
Total Taxes $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
EBITDA (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $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.


Proposed Heavy Mobile Equipment as of December 4, 2017:
HME TypeSizeQuantityLeased or
Contractor
Drill ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 28, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 28, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Technical Report 2017
Corporate Presentation 2016
Corporate Presentation 2015
Project Description 2014
Technical Report 2014
Subscription required - Subscription is required.

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