GRL godolphin resources limited

Here is the reason, Godolphin’s REE resources could upstage many...

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    Here is the reason, Godolphin’s REE resources could upstage many of the possibles in Australia.

    Why? I have copied and pasted the following explanation.

    Goldolphin’s REE’s are “Ionic Adsorption Clay” vs “Hard Rock-hosted" REE.








    Mining/Processing Stages





    Ionic Adsorption Clay (IAC)





    Hard Rock-hosted REE





    Mineralisation



    • Soft material, negligible (if any) blasting

    • Elevated HREO/CREO relative to TREO head grade

    • Lower grade TREO (0.04 – 0.3 % TREO)



    • Hard rock; Bastnaesite and Monazite (LREO dominant); Xenotime (HREO dominant)

    • High La,Cecomponent of TREO head grade, ~ 5% HREO content

    • Higher grade TREO (> 0.7% TREO)





    Mining



    • Bulk Mining, low relative operating costs:

    • Surface mining (0-20 m), 3 m of cover

    • Minimal stripping of waste material (strip ratio = 0.8)

    • Progressive rehabilitation of mined areas



    • Selective Mining, high relative operating costs;

    • Blasting required

    • Could have high strip ratios

    • Grade control requirements high





    Processing Mining Site



    • No milling

    • Simple process plant, bulk process methods

    • Potential for static or in-situ leaching

    • Low reagent consumption at ambient temperature



    • Comminution, Intensive crushing and grinding required to liberate REE minerals

    • Beneficiation via simple screening a possible option

    • Expensive (flotation) reagents and utilities required to produce mineral concentrate





    Mine Product



    • Mixed high-grade rare earth carbonate, +90% TREO grade product

    • Low La,Ce content (25-30%), high HREO/CREO content (70-75%), high basket value (US$39/kg REO)

    • Magnet metals ~ 33.3% (including 5% Dy+Tb)

    • High margin product



    • Mixed REE mineral concentrate (typically 20 – 40% TREO grade), gangue entrainment requires high product transport costs

    • High La,Ce content (~70%), low basket value per kg of product (US$13-20/kg REO)

    • Requires substantial processing (i.e. cracking) before suitable for feed to rare earth separation plant

    • Low margin product if mineral concentrate only





    Product Payability



    • 70-80% payability as a mixed Rare Earth carbonate



    • 35-40% payability as a mineral concentrate





    Processing - Environmental



    • Non-radioactive tailings

    • Solution treatment and reagent recovery requirements (somewhat off-set by advantageous supporting infrastructure)



    • Tailings often radioactive (complex and costly disposal)

    • Legacy radionuclide tailing management





    Processing - Refinery(Typically not on Mining site)



    • Mixed rare earth carbonate, +90% TREO grade product a highly desirable feedstock directly into rare earth separation plant

    • Simple acid solubilisation followed by conventional REE separation

    • Complex recycling of reagents and water



    • High temperature mineral “cracking” using strong reagents to solubilise the refractory REE minerals

    • Complex capital-intensive plant required, i.e. high capex requirement

    • Radionuclide issues follow REE mineral concentrates to cracking plant

    • Social licence to operate concerns re radioactive tailings


 
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