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Canada
Crevier Project

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 Location:
175 km NW from Saguenay, Quebec, Canada

  Project Contacts:
Suite 106-1693 Saint-Patrick street
Montreal
Quebec, Canada
H3K 3G9
Phone  ...  Subscription required
Fax(514) 932-1543
WebsiteWeb
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  • Overview
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Overview

StatusInactive / Suspended
Mine TypeOpen Pit
Commodities
  • Niobium
  • Tantalum
Mining Method
  • Truck & Shovel / Loader
Mine Life25 years (as of Jan 1, 2010)


Owners

 
CompanyInterestOwnership
Niobec Inc. 27.5 % Indirect
Niobay Metals Inc. 72.5 % Indirect
Crevier Minerals Inc. 100 % Direct

Contractors

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Deposit Type

  • Magmatic
  • Carbonatite hosted


Summary:

The alkaline complex is divided into three (3) main lithological units (Units 1 to 3), the fourth unit being the Grenville rocks. These main units are composed of many specific distinct lithological units, defined by local mapping and diamond drilling.

- The first unit represents the major north-western part of the complex; its elongated shape is aligned along a North 320° axis. The composition is an alternating suite of bands of biotite-carbonate syenites, nepheline syenites, nepheline syenites with biotite and carbonatites with an orientation between North 300° and North 340°;

- The second unit mainly covers the south of the complex, but is also present in a 300 meter thick band surrounding the first unit. The composition is mainly nepheline syenite with nepheline-biotite syenite dykes crossing the formations along North 320°;

- The third unit is very small and is located in the south western part of the complex, inside the second unit and is characterized by a large amount of syenite.

Two (2) main mineralization types of economic interest are present inside the Crevier complex. The first type of uranium-niobium mineralization is mainly located inside the first unit inside an uranopyrochlore unit. The second mineralization type is one of niobium-tantalum and is associated with a pegmatite-nepheline syenite dyke located inside the second unit and also inside the first unit.

Apatite is found in few spots inside the co ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

A 25 year mine plan was developed from the design pit based on a production rate of about 1.0 Mtpy of mineral, an external dilution factor of 5% (at zero grade) and a mineable recovery factor of 95% or uncontrollable losses during mining. Mineral will be excavated with 6.2 m3 hydraulic excavators and trucked to the crusher located near the plant to the southwest corner of the pit using off-highway quarry-type 41-metric ton dump trucks. All mine equipment is to be owned, operated and serviced by Crevier, except for explosives requirements, where a contractor will be responsible for explosives loading and blasting.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Niobium Nb2O5 t 1,13329,462
Tantalum K2TaF7 t  ......  Subscription required  ......  Subscription required

Operational Metrics:

Metrics
Stripping / waste ratio 6.3 *
Daily mining capacity 2,740 t of ore *
Annual mining capacity 1,000,000 t *
Waste tonnes, LOM 155,733,854 t *
Ore tonnes mined, LOM 25,838,056 t *
Plant annual capacity 1,000,000 t *
Daily processing capacity 2,740 t of ore *
* According to 2010 study.

Reserves at June 14, 2010:

CategoryTonnage CommodityGrade
Measured 12,465,000 t Nb2O5 0.2 %
Measured 12,465,000 t Ta2O5 234 g/t
Indicated 12,904,000 t Nb2O5 0.19 %
Indicated 12,904,000 t Ta2O5 234 g/t
Measured & Indicated 25,369,000 t Nb2O5 0.2 %
Measured & Indicated 25,369,000 t Ta2O5 234 g/t
Inferred 15,423,000 t Nb2O5 0.17 %
Inferred 15,423,000 t Ta2O5 252 g/t

Commodity Production Costs:

CommodityUnits
Assumed price K2TaF7 USD 150 / kg *  USD
Assumed price Nb2O5 USD 51.5 / kg *  USD
* According to 2010 study / presentation.
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Operating Costs:

Units2022
OP mining costs ($/t milled) CAD 2.44 *
Processing costs ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2010 study.
Subscription required - Subscription is required.

2010 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Pre-tax NPV @ 5% $M CAD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of January 28, 2010:
HME TypeSizeQuantity
Dozer (rubber tire) ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
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Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Preliminary Economic Assessment 2010
Technical Report 2010
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