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Critica Ltd (ASX:CRI) has upgraded the rare earth element (REE) mineralisation at its flagship Jupiter project by a whopping 830% through early-stage metallurgical test work.

Jupiter is part of the wider Brothers clay-hosted project, 250 kilometres east of Geraldton.

The critical minerals upgrade was achieved through a simple flotation process, producing a beneficiated product grading 13,310 parts per million (1.331% total rare earth oxides) from composite ore taken from Jupiter.

These results – part of a wider effort to roll out beneficiation at Jupiter – have left Critica confident that a high-grade concentrate can be produced from this ore.

Managing director Philippa Leggat said the development is now considered a top priority for the company after it indentified that Jupiter “holds significant economic and development potential given its high in-situ grades, large scale and premier location within a key Western Australian mining hub.”

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“With those very real dynamics in mind, we are treating this significant project with the respect it deserves,” Ms Leggat continued.

“This means building a strong foundation of robust geological and metallurgical data via rigorous technical work, targeting the establishment and derisking of a valuable, intergenerational development opportunity.”

Critica shares have been up more than 11.7% to sell at 1.9cps.

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