Green Technology Metals Ltd (ASX: GT1) has announced a major development at its Seymour Project in Ontario, Canada, revealing a significant Rubidium Mineral Resource. This discovery is hosted within the same pegmatite system as the company's lithium resource at North Aubry. Notably, Rubidium, recognized as a critical mineral by the United States and Japan, is vital for advanced electronics, aerospace, quantum computing, and defense applications. The project positions GT1 to convert previously considered waste into a valuable by-product, enhancing the project's sustainability and strategic value. The company is among the few globally exploring Rubidium recovery from lithium operations, aligning with its strategy to maximize resource value. Managing Director Cameron Henry emphasized the project's potential to contribute significantly to the global supply of this high-value metal, while providing diversified exposure for investors.