Gemini Lithium Project Metallurgical Testing

VANCOUVER - Nevada Sunrise Metals Corp. reported on metallurgical testing carried out on lithium mineralization from its Gemini Lithium Project located in the Lida Valley basin in Esmeralda County, Nevada. A novel method of small-scale column testing achieved a 90.2% lithium extraction rate.

Highlights of Gemini Metallurgical Testing Preliminary leaching test work was designed to focus on obtaining a lithium leach extraction of more than 80%. Early tests included a standard sulfuric acid leach, the re-leach of residues, a hot acid beaker leach of low and high-grade mineralization, and a gypsum/lime roast water leach. Following the use of various extraction methods an "acid-bake" step was implemented using concentrated sulfuric acid on moist lithium-in-sediment mineralization with average lithium values of approximately 1,100 parts per million ("ppm") lithium. A one-meter-tall column was loaded with Gemini clay mineralization and an open-circuit system employed a two-step leaching system, which achieved a 90.2% lithium extraction over a 25-day period.