Brazilian Ionic Clay Project Posts Stronger Grades Than Competitors, Skips Radioactive Headaches

2025-10-21 12:53:00 ET

As global demand for electric vehicles, wind turbines, and robotics accelerates, the race to secure new sources of magnet rare earth elements (REEs) has become one of the most closely watched stories in critical minerals. Companies able to confirm ionic clay deposits, prized for their shallow, low-cost, and environmentally friendly extraction potential, are drawing increasing investor attention.

Verde AgriTech Ltd. ( TSX: NPK ) ( OTCQX: VNPKF ) is the latest name to light up the sector. Shares are gaining Tuesday morning trading after the company confirmed ionic-adsorption behavior with high-value magnet rare earths at its Minas Americas Global Alliance Project in Minas Gerais, Brazil.

According to the company, ammonium-sulfate leach tests demonstrated strong recoveries of magnet REEs including neodymium (Nd), praseodymium (Pr), dysprosium (Dy), and terbium (Tb), all critical components in high-performance magnets used across clean energy and defense industries. Top results showed up to 667 mg/kg total desorbable rare earth oxide (DREO) and 278 mg/kg magnetic rare earth oxide (MREO) with no detectable uranium or thorium, an important environmental differentiator.

Verde noted that magnet REEs comprised over 40% of dissolved REOs in its best leach samples, highlighting a favorable enrichment profile. The company also emphasized the exceptionally low levels of iron and aluminum impurities, supporting efficient downstream processing into high-purity mixed rare earth carbonates. These results confirm the project’s “clean” ionic clay characteristics, a geological signature that can translate into simpler, lower-cost extraction.

In comparative analysis, Verde reported that its leachate concentrations exceeded those from Aclara Resources’ Carina Project in Brazil, with Minas Americas returning magnet rare earth grades of up to 278 mg/kg MREO versus Aclara’s reported ~152 mg/kg MREO under similar test conditions. This positions Minas Americas as potentially one of the most prospective ionic clay projects outside China.

The company stressed that today’s test results came from a conservative first-stage diagnostic leach, using a mild 30-minute, single-pass procedure. Upcoming second-stage metallurgical testing, part of Verde’s preliminary economic assessment expected in Q2 2026, will employ multi-stage, counter-current leaching and washing to enhance recoveries of Nd, Pr, Dy, and Tb while maintaining the clean impurity profile.

Verde AgriTech, known for its sustainable fertilizer products, continues to expand its scope into critical minerals through projects that complement its environmental and technological expertise.

Shares of NPK last traded at $1.97, up 11.9%, while VNPKF, which aren't quite as active as their Canadian counterpart, remained unchanged at $1.17.

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