Great Northern Minerals Limited (ASX:GNM) is an Australia-based mineral exploration and development company focused on gold, antimony, rare earth elements, lithium, and copper deposits; it holds interests in the Catalyst Ridge rare earth elements and antimony project in California's Mountain Pass District comprising 214 lode mining claims over approximately 18 square kilometers, the Golden Ant gold-antimony project in North Queensland, Australia covering about 660 square kilometers across Golden Cup, Camel Creek, and related trends with high-grade mineralization, the Douglas Creek project in north Queensland, and the Finland lithium projects including the Sukula project (174.3 square kilometers) and Kuusisuo project (362 square kilometers) in southern Finland. The company primarily targets critical minerals and precious metals for mining and processing sectors, with operations spanning Australia, the United States, and Finland, and serves markets emphasizing supply chain security for defense, technology, and energy transition applications. Founded in 1899 and headquartered in Perth, Australia, it was formerly known as Greenpower Energy Limited before changing its name in October 2019; recently, it completed the acquisition of the Catalyst Ridge project in October 2025, supported by a capital raise positioning cash reserves at approximately A$3.06 million, amid US-Australia bilateral commitments exceeding US$1 billion each for critical minerals projects, and maintains an aggressive exploration program including initial sampling at Catalyst Ridge with results anticipated by late 2025.