CRE Article A new feasibility study released earlier this year envisioned a 17-year operation that will excavate a total of 26.3 million tonnes of ore grading 0.87% Li2O (lithium oxide) and 138 ppm Ta2O5 (tantalum pentoxide). These mineral reserves, all categorized as probable, are estimated from 17 mineralized zones on the Rose property.
Each year, the proposed mill will process 1.61 million tonnes of ore to produce an annual average of 224,686 tonnes of technical and chemical grade spodumene concentrates, plus 441 tonnes of tantalite concentrate.
The study pegs the lithium mining operation at an after-tax net present value of over $1.91 billion (at 8% discount rate) with an internal rate of return of 82.4%. The initial capital cost is estimated at $357 million. Variable costs include average operating costs of $74.48/t milled and $540/t concentrate (all concentrate production combined).
https://www.mining.com/critical-elements-gets-quebecs-environmental-ok-to-move-rose-lithium-tantalum-project-forward/
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