Critical Elements Corporation

Critical Elements Corporation

July 27, 2011 12:38 ET

Critical Elements: The Rose Deposit is One of the Largest Resources of "Conflict Free" Tantalum, With a New Indicated Resource of 26,500,000 Tonnes at 1.30% Li2O Eq or 0.98% Li2O, 163 ppm Ta2O5

MONTREAL, QUEBEC--(Marketwire - July 27, 2011) - CRITICAL ELEMENTS CORPORATION (TSX VENTURE:CRE) (OTCQX:CRECF) (FRANKFURT:F12) is pleased to report an update to the independent resource estimate for its Rose deposit, James Bay, Quebec.

The Rose deposit now consists of 26,500,000 tonnes of indicated resources containing 1.30% Li2O Equivalent (Eq) or 0.98% Li2O (259,700 tonnes of Li2O or 642,238 tonnes of Li2CO3 Eq), 163 ppm of Ta2O5 (9,514,317 pounds of Ta2O5) and 10,700,000 tonnes of inferred resources containing 1.14% Li2O Equivalent (Eq) or 0.86% Li2O (92,020 tonnes of Li2O or 227,565 tonnes of Li2CO3 Eq), 145 ppm Ta2O5 (3,417,400 pounds of Ta2O5). The resource was compiled using a cut-off grade of 41$/t for the open pit model and 66$/t for the underground model (taking Li and Ta recovery into consideration) based on the current estimation of the resource and market conditions. The NI-43-101 compliant technical report will be available on SEDAR within the next 45 calendar days.

This new indicated resource represents an increase of 131% in tonnage, 129% in Ta2O5 and 69% in Li2O. The new inferred resources represent an increase of 393% in tonnage, 418% in Ta2O5 and 234 % in Li2O.

The current resource estimate demonstrates that the Rose deposit is one of the more important resources of "ethical" tantalum. The resources are contained in twenty-three (23) subhorizontal pegmatites, at and near surface. The thickness of the zones varies from 2m to 21m.

"With an indicated resource of 642,238 tonnes of lithium carbonate and 9,514,317 pounds "Conflict Free" of Ta2O5, Critical Elements have now the potential to become a major player at the global scale of supply of strategic elements. There is an excellent potential to increase the size of the deposit at Rose itself and at the nearby additional showings on the Rose property, considerably and quickly", stated Jean- Sébastien Lavallée, President & CEO of Critical Elements Corporation.

Highlights of the 43-101 property report, prepared by InnovExplo Inc., independent consulting firm include the following:

Critical Elements Inc. – Rose Project
Rose Resource Estimate dated July 20th, 2011
Tonnes Li2O equivalent Li2O Ta2O5 Rb Cs Be Ga
(x 1,000) (%) (%) (ppm) (ppm) (ppm) (ppm) (ppm)
Open-pit model
Lithium Zones 23,800 1.35% 1.05% 157 2,410 94 131 67
Tantalum Zones 1,900 0.78% 0.33% 233 1,592 80 93 54
Underground model
Lithium Zones 700 0.95% 0.63% 171 2,098 85 137 72
Tantalum Zones 100 0.95% 0.60% 180 2,404 108 109 63
Total Indicated 26,500 1.30% 0.98% 163 2,343 92 128 66
Tonnes Li2O equivalent Li2O Ta2O5 Rb Cs Be Ga
(x 1,000) (%) (%) (ppm) (ppm) (ppm) (ppm) (ppm)
Open-pit model
Lithium Zones 7,900 1.22% 0.95% 143 1,610 77 126 63
Tantalum Zones 1,100 0.73% 0.28% 232 1,079 78 93 54
Underground model
Lithium Zones 1,600 1.05% 0.88% 90 752 55 116 55
Tantalum Zones 100 0.77% 0.09% 355 256 87 27 50
Total Inferred 10,700 1.14% 0.86% 145 1,418 74 121 61
  1. The Qualified People for the Mineral Resource Estimates as defined by National Regulation 43-101 were Pierre-Luc Richard, B.Sc., P.Geo. and Carl Pelletier, B.Sc., P.Geo. (InnovExplo Inc.), and the effective date of the estimate is July 20, 2011. National Regulation 43-101 and CIM definitions were followed.

  2. Mineral Resources are not Mineral Reserves having no demonstrated economic viability.

  3. Results are presented undiluted and in situ, and some resource blocks may be locked in pillars. The whole resource is included in a pit shell established by InnovExplo. The estimate includes twenty-three (23) zones (10 zones are categorized as lithium dominant and 13 are categorized as tantalum dominant). The resource estimate covers the drilled area of the Rose as well as the JR and the Hydro showings Totals may not sum correctly due to rounding.

  4. The resource modeling used data from surface NQ core drilling samples collected by First Gold Exploration (now Critical Elements) in 2009 (10 DDH), in 2010 (148 DDH) and in 2011 (44 DDH) totalling 202 DDH including a total of 4,406 sampled assays from 25,201 metres of drilling. A fixed density of 2.71 g/cm3 was used based on the average density measured in mineralized lithologies. A minimum width of 2.0m was applied, using the grade of the adjacent material when assayed or value of zero when not assayed. Based on appropriate statistics, a capping of 15,000 was fixed for lithium, 650 for tantalum, 10,000 for rubidium, 600 for cesium, 900 for beryllium, and 150 for gallium, with all values in ppm. Raw assays were composited (after being capped) using 1.00 m drill hole intervals.

  5. The Resources were compiled using a cut-off grade established on a "tonne value" of 41$ (open-pit model) and 66$ (underground model) based on the current estimation of the resource and market conditions. The "tonne value" considers a 64% recovery for lithium and a 70% recovery for tantalum. A price of 6,000$/t lithium
    carbonate (Li2CO3) and a price of 317$/kg Ta was considered (prices and opex produced by Genivar (internal study for Critical Elements; June 2011). No valuation was included for any of the other elements. The cut-off used must be re-evaluated in light of the present market pricing for lithium and tantalum as well as exchange
    rates, recovery and mining cost. Possible recovery of other elements should also be considered. Li2O equivalent was determined based on lithium and tantalum prices and their respective recovery ratio.

  6. No Measured Resources were estimated. Indicated and Inferred Resources were evaluated from drill holes results using a block model approach (inverse distance squared interpolation) with 5m blocks within GEMS software (version 6.2.4). The interpolation was constrained within twenty-four (24) individual 3D solids (one solid did not produce any tonnes at the established cut-off).

  7. Calculations used metric units (meters, tonnes and ppm). Results were rounded to reflect their estimated nature. Tonnes are rounded to 100,000. Grades reported in percent were rounded to two decimals while grades reported in part per million (ppm) were rounded to the closest integer.


"The mineralized pegmatitic dykes are oriented N296 and show a shallow dip to the northeast averaging 15 degrees (locally from 5 to 20 degrees). The deposit was identified over a strike of 1,800 metres and remains open along strike and at depth."

"Based on lithium and tantalum grades, the deposit is, so far, only limited by topography. It is open along strike to the southeast and to the northwest as well as at depth."

"The block model indicates that the entire reported resource extends to a depth of 300 metres, which is limited by the existing drilling."

"There is considerable potential to increase tonnage with additional drilling of the known pegmatitic dykes at depth and along strike. In addition, the current geological setting suggests that there is a reasonable potential to identify new zones in the immediate environment. The authors believe that the gap between the "LR" drill holes and the "JR" drill holes exists because of the absence of drilling and that it should be drilled in order to link the two areas."

"Different cut-offs were calculated. While the 41$/tonne cut-off is the official cut-off of this resource estimate for the open pit model and 66$/tonne is the official cut-off of this resource estimate for the underground model, other cut-offs are presented at


Critical Elements is actively developing its 100%-owned Rose lithium-tantalum flagship project located in Quebec. The project hosts a current new NI 43-101 compliant Indicated resource of 26.5 million tonnes of 1.30% Li2O Eq. or 0.98% Li2O and 163 ppm Ta2O5 and Inferred resource of 10.7 million tonnes of 1.14% Li2O Eq. or 0.86% Li2O and 145 ppm Ta2O5 announced in this press release.

Critical Elements has commissioned a prefeasibility study for the project from Genivar, one of the largest independent engineering firms in Canada. Genivar is also doing an environmental study, and Acme Metallurgical Ltd. of Vancouver is carrying out project metallurgy.

Critical Elements' portfolio also includes rare-earth and tantalum-niobium projects in the Rocky Mountains of British Columbia and in Quebec, as well as a 50% interest in the Croinor project, which is located in Quebec and hosts a current NI 43-101 compliant measured and indicated resource of 814,228 tonnes at 9.11 g/t Au, for 238,414 ounces of gold at a 5 g/t cut-off.

Jean-Sebastien Lavallee (OGQ #773), geologist, shareholder and president and chief executive officer by interim of the Company and a Qualified Person under NI 43-101, has reviewed and approved the technical content of this release.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Contact Information

  • Critical Elements Corporation
    Jean-Sebastien Lavallee, P.Geo.
    President and Chief Executive Officer

    Paradox Public Relations