Business
Mineral Hill Carbonatite Yields Greater than 17.6% Total Rare Earths at Idaho Strategic's Recently Added Cardinal Prospect
COEUR D'ALENE, ID / ACCESS Newswire / July 24, 2025 / Idaho Strategic Resources (NYSE American:IDR) ("IDR" or the "Company") is pleased to announce that it has
About this update from Idaho Strategic Resources, Inc.
[{"type":"text","content":" COEUR D'ALENE, ID / ACCESS Newswire / July 24, 2025 / Idaho Strategic Resources (NYSE American:IDR) (\"IDR\" or the \"Company\") is pleased to announce that it has sampled greater than 17.6% total rare earth oxides (TREO) at the Company's Mineral Hill project - IDR's northernmost rare earth project in the Idaho REE-Th Belt. The Company also recently completed a drone-based magnetics survey flown over the entirety of the Mineral Hill project which has aided in the Company's knowledge of known carbonatite outcrops and the potential identification of additional carbonatites at Mineral Hill. The following two figures show magnetic survey data covering three known carbonatite prospects in the Mineral Hill district: Roberts, Cardinal, and Lower Lee Buck (all controlled by IDR). The map above shows the Total Magnetic Intensity (TMI) and identifies an extensive northwest trending, semi-linear zone of magnetic highs with a response consistent with a dike swarm. This zone extends 1.5 km southeast of the Cardinal prospect, through Cardinal, to the Lower Lee Buck prospect for a total of 3.5 km. The Roberts area displays a very strong circular magnetic anomaly. The map above is a reduced-to-the-pole upward continued (RTP_UC) map generated from the processed magnetic survey data. This map indicates a deep sourced, large magnetic feature extending in a northeast orientation from Roberts to Cardinal. The southwest end of this feature is larger and deeper which is suggestive of an intrusion. The TMI magnetics data correctly reflects the geologic mapping and spatial location of the known carbonatites and provides a template for identifying other potential carbonatite prospects throughout the project. Monazite is the primary ore mineral and occurs in relatively pure bands up to 20 cm within the carbonatite. Select grab samples were taken from the areas of the carbonatite outcrop with visible monazite. Samples where certain rare earth elements exceeded the upper detection limits of the selected lab analysis are being re-processed to account for overruns. The table below highlights the recent sample results obtained from the Cardinal prospect at the Company's Mineral Hill project: Idaho Strategic's geologists were successful at identifying at least three subparallel carbonatite seams with abundant visible monazite and consistently high pXRF sample ...