The new claims are adjacent to Locksley's existing tenement position and adjoin MP Materials landholding, which includes the Mountain Pass Rare Earth Mine. The new claims also secure additional acreage for Locksley in that they abut the recently identified antimony, rare earths elements (REEs) and polymetallic mineralization reported by the company. Move Expands Locksley's Exploration Pipeline Across Antimony, Rare Earths Elements and Polymetallic Prospects SAN BERNARDINO, Calif., Sept. 11, 2025 /PRNewswire ...