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Canada
Ashram Project

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 Location:
128 km S from Kuujjuaq, Quebec, Canada

  Project Contacts:
Suite 1450 - 789 West Pender Street
Vancouver
British Columbia, Canada
V6C 1H2
Phone  ...  Subscription required
Fax604-681-8240
EmailEmail
WebsiteWeb
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  • Overview
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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • REE
Mining Method
  • Truck & Shovel / Loader
Mine Life25 years (as of Jan 1, 2015)
The largest monazite dominant carbonatite hosted REE resource in North America.

Estimate of years of production with current resource – 110 years. Initial Mine Life - 25 years.


Owners

Source: p. 3
CompanyInterestOwnership
Commerce Resources Corp. 100 % Direct
The Property is 100%-owned by Commerce Resources Corp.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Carbonatite hosted
  • Magmatic


Summary:

The deposit model at the Eldor Property is the carbonatite-hosted REE-Nb-Ta deposit. Carbonatites are by definition igneous rocks, intrusive and extrusive, that contain more than 50% by volume carbonate minerals such as calcite, dolomite, ankerite, and less often siderite and magnesite. Intrusive carbonatites occur commonly within alkalic complexes or as isolated intrusions (sills, dikes, breccias, or small plugs) that may not be genetically related to other alkaline intrusions. Carbonatites can also be volcanic-related and occur as flow or pyroclastic rocks like the well-known active Oldoinyo Lengai volcano in Tanzania. Carbonatites are generally related to large-scale, intra-plate fractures, grabens, or rifts that correlate with periods of extension, typically Precambrian to recent in age.

Carbonatite-hosted deposits occur almost exclusively in intrusive carbonatite and may be subdivided into magmatic, replacement/veins, and residual sub-type. The Eldor Carbonatite can be classified as a magmatic sub-type, which is the same category as the St-Honore deposit in Quebec, Canada (Niobec niobium mine, Iamgold), the Mountain Pass Deposit in California, U.S.A. (REE), and the Palabora Deposit in South Africa (apatite).

The Rare earth element mineralization at Ashram is hosted primarily (essentially 100%) by monazite, rare earth fluorocarbonates (bastnäsite, parisite, and lesser synchysite) and lesser xenotime. Rare earth mineralization at Ashram is consistent ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Taking into account the proximity of the mineralized zone with the surface topography and the presence of high grades of REEs at shallow depth, the mining method selected to mine the Ashram Deposit is open-pit mining. Conventional mining machinery, such as trucks, loaders, and hydraulic shovels will be used on 5 metre benches

At a rate of 4,000 tonnes of ore per day processed at a CoG of 1.25%, the Ashram Deposit contains enough resource to support an operation for more than 177 years (open pit and underground mining). Therefore, the main purpose of the optimization process was to highlight a section of the deposit providing a sufficient TREO grade (over 1.25% TREO) with a reasonable stripping ratio, rather than determining the optimum pit limit.

SGS and Commerce Resources agreed to limit this PEA to the 25 first years. The evaluation beyond these years is pure speculation considering the impossibility of predicting the demand for the lanthanides for such a period plus the changes in the overall economy. SGS developed a life-of-mine scenario (LoM) based on a 1,400,000 tonnes mill throughput (4,000 tonnes per day over 350 days per year). Stripping will begin during construction phase (year 0) in order to use waste material to build roads and infrastructure foundations.

Using the base case shell as reference, an open-pit including a ramp and safety berms was designed to develop a more realistic mining scenario. The new designed pit will account ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. Annual
REE Oxide t 16,850
REE Carbonate t 36,000

Operational Metrics:

Metrics
Stripping / waste ratio 0.19 *
Daily mining rate 4,500 t *
Daily mining capacity 5,000 t *
Daily milling capacity 4,000 t *
Waste tonnes, LOM 6,511,742 t *
Ore tonnes mined, LOM 35,000,000 t *
Tonnes milled, LOM 35,000,000 t *
Annual milling capacity 1,400,000 t *
* According to 2015 study.

Reserves at January 7, 2015:
A cut-off grade of 1.25% TREO is used for reporting the Mineral Resource estimate.

CategoryTonnage CommodityGrade
Measured 1,590,000 t Total Rare Earth Oxides 1.77 %
Measured 1,590,000 t Light Rare Earth Oxides 1.6 %
Measured 1,590,000 t Middle Rare Earth Oxides 0.089 %
Measured 1,590,000 t Heavy Rare Earth Oxides 0.085 %
Indicated 27,670,000 t Total Rare Earth Oxides 1.9 %
Indicated 27,670,000 t Light Rare Earth Oxides 1.77 %
Indicated 27,670,000 t Middle Rare Earth Oxides 0.073 %
Indicated 27,670,000 t Heavy Rare Earth Oxides 0.056 %
Measured & Indicated 29,270,000 t Total Rare Earth Oxides 1.9 %
Measured & Indicated 29,270,000 t Light Rare Earth Oxides 1.77 %
Measured & Indicated 29,270,000 t Middle Rare Earth Oxides 0.073 %
Measured & Indicated 29,270,000 t Heavy Rare Earth Oxides 0.057 %
Inferred 219,800,000 t Total Rare Earth Oxides 1.88 %
Inferred 219,800,000 t Light Rare Earth Oxides 1.77 %
Inferred 219,800,000 t Middle Rare Earth Oxides 0.068 %
Inferred 219,800,000 t Heavy Rare Earth Oxides 0.045 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Total Rare Earth Oxides CAD 7.91 / kg *  
Assumed price Total Rare Earth Oxides CAD 35 / kg *  
* According to 2015 study / presentation.

Operating Costs:

Units2015
OP mining costs ($/t mined) CAD 5.32 *
OP mining costs ($/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 2015 study.
Subscription required - Subscription is required.

2015 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 1,444
G&A costs $M CAD 1,670
Total OpEx $M CAD  ......  Subscription required
Net revenue (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 25% $M CAD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of January 7, 2015:
HME TypeModelSizeQuantity
Crane 75 t ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jan 7, 2015
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jan 7, 2015
....................... Subscription required ....................... Subscription required Subscription required Dec 23, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Preliminary Economic Assessment 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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