SAGUENAY, Québec, Oct. 22, 2026 (GLOBE NEWSWIRE) -- Arianne Phosphate (the “Company” or “Arianne”) (TSX VENTURE: DAN; OTCQB: DRRSF; FRANKFURT: JE9N), a development-stage phosphate mining company, advancing the Lac à Paul project in Quebec’s Saguenay-Lac-Saint-Jean region, is pleased to announce that, with its partner Travertine Technologies Inc. (“Travertine”), it has successfully produced a marketable precipitated calcium carbonate (“PCC”) co-product during the production of its purified phosphoric acid (“PPA”). As previously announced, Arianne and Travertine entered into a Joint Venture (“JV”) framework (see Press Release dated June 2, 2026) for the production of purified phosphoric acid (“PPA”) by combining Arianne’s high-purity phosphate concentrate with Travertine’s proprietary process that produces PPA while recycling the sulphuric acid used in the process.

Precipitated calcium carbonate (“PCC”) is a high-purity, manufactured form of calcium carbonate valued for its brightness, consistency and fine particle size. It is used as a filler and functional additive across a broad range of everyday products, from paper, plastics, paints and sealants to construction materials such as cement, concrete and asphalt shingles. Additionally, because the PCC produced through the Arianne-Travertine process permanently stores carbon dioxide and turns a traditional phosphate waste stream into a saleable product, it would provide the JV an additional revenue stream while helping Canada’s building materials industry lower its carbon footprint. The JV-produced PCC was provided to a Canadian building materials end user and qualified by their laboratory in one of their building material formulations, confirming its suitability for the target application.

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