Idaho Strategic Resources Discovers Rich HREO and Yttrium Zones at Diamond Creek Project

Published: Jul 30, 2026 09:12 (GMT+8)
[SMM Rare Earth Flash] US-based Idaho Strategic Resources (ISR) has discovered mineralized zones rich in heavy rare earth elements (HREO) at its Diamond Creek project in Idaho, with yttrium resources standing out. The company's latest sampling covered 4 exploration areas spanning about 3.2 km, with data showing an average total rare earth oxide (TREO) grade of 1.8%, heavy rare earth oxide (HREO) generally exceeding 0.2%, and a yttrium oxide grade of around 0.13%. Specifically, a 32-meter trench sample at the Lucky Gem prospect showed TREO (1.5%), HREO (0.23%), and yttrium oxide (0.16%), while drill hole DC22-8 intersected 11.3 meters grading TREO (1.5%), HREO (0.25%), and yttrium oxide (0.17%).

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