Overview
| Status | Inactive / Suspended |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 25 years (as of Jan 1, 2010) |
Contractors
- Subscription is required.
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 ........
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.
Source:
Summary:
- subscription is required.
Projected Production:
| Commodity | Product | Units | Avg. Annual | LOM |
|
Niobium
|
Nb2O5
|
t
| 1,133 | 29,462 |
|
Tantalum
|
K2TaF7
|
t
| ...... | ...... |
Operational Metrics:
| Metrics | |
|
Daily mining capacity
| 2,740 t of ore * |
|
Daily processing capacity
| 2,740 t of ore * |
|
Annual mining capacity
| 1,000,000 t * |
|
Plant annual capacity
| 1,000,000 t * |
|
Stripping / waste ratio
| 6.3 * |
|
Waste tonnes, LOM
| 155,733,854 t * |
|
Ore tonnes mined, LOM
| 25,838,056 t * |
* According to 2010 study.
Reserves at June 14, 2010:
| Category | Tonnage | Commodity | Grade |
|
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:
| | Commodity | Units | |
|
Assumed price
|
K2TaF7
|
USD
|
150 / kg * USD
|
|
Assumed price
|
Nb2O5
|
USD
|
51.5 / kg * USD
|
* According to 2010 study / presentation.
- Subscription is required.
Operating Costs:
| | Units | 2022 |
|
OP mining costs ($/t milled)
|
CAD
| 2.44 * CAD |
|
Processing costs ($/t milled)
|
CAD
| ...... |
|
Total operating costs ($/t milled)
|
CAD
| ...... |
* According to 2010 study.
- Subscription is required.
2010 Study Costs and Valuation Metrics :
| Metrics | Units | LOM Total |
|
Initial CapEx
|
$M CAD
|
......
|
|
Pre-tax NPV @ 5%
|
$M CAD
|
......
|
|
Pre-tax IRR, %
|
|
......
|
- Subscription is required.
- Subscription is required.
Corporate Filings & Presentations:
- Subscription is required.
- Subscription is required.