St George Mining has set a significant milestone at its wholly owned Araxá rare earths and niobium project in Minas Gerais, Brazil. The company reported its thickest high-grade mineral intercept to date, revealing a remarkable 139.45 meters grading 4.05 percent total rare earth oxides (TREO) and 0.55 percent niobium pentoxide from surface. This latest finding not only surpasses the previous record of 115.65 meters, announced earlier this month, but also emphasizes the project’s growing potential.
The standout intercept includes a particularly robust section of 53.9 meters at 5.44 percent TREO and 0.79 percent niobium pentoxide starting from just 9 meters below the surface. In addition to this, assays from nine additional drill holes have confirmed consistent, thick, high-grade mineralization starting from surface level, reinforcing the area’s resource viability.
One of the notable discoveries includes an 80.15-meter intercept grading 5.11 percent TREO and 0.76 percent niobium pentoxide, which contains 43.9 meters at 6.18 percent TREO and 1.05 percent niobium pentoxide from a depth of 36.2 meters. Another hole produced 82.55 meters at 3.9 percent TREO and 0.59 percent niobium pentoxide, comprised of 56.55 meters at 4.97 percent TREO and 0.72 percent niobium pentoxide from a depth of 26 meters. A third hole confirmed this trend with an 81.45-meter intercept showing 4.52 percent TREO and 0.56 percent niobium pentoxide, including a remarkable 4.55 meters at 8.87 percent TREO and 0.78 percent niobium pentoxide starting from 21.45 meters.
These results highlight extensive high-grade zones both within and beyond the current mineral resource estimate. The findings suggest a massive potential for resource growth at what is already the largest and highest-grade carbonatite-hosted rare earths resource in South America. The mineralization is rich in magnet rare earths, with a neodymium-praseodymium to TREO ratio of approximately 20 percent, a figure that has remained stable across previous results and within the existing resource.
Importantly, the system remains open laterally and at depth, prompting St George Mining to ramp up its drilling operations to a 24/7 schedule, a commitment that has now been extended into 2026. A recent mineralogical breakthrough has identified primary pyrochlore—the host mineral for niobium—preserved within fresh carbonatite diamond core. This complex niobium oxide is typically found in carbonatites and is often associated with columbite, a niobium-tantalum mineral.
The presence of pyrochlore suggests a robust primary source beneath the supergene-enriched zones at Araxá, indicating a strong likelihood of grade continuity and the potential for further high-grade discoveries across the carbonatite complex. St George Mining is experiencing a surge of success at Araxá, as each new drill hole enhances the project’s reputation as a world-class rare earths and niobium asset. Investors and industry observers are now eagerly awaiting additional results that could lead to a significant resource upgrade.
For more information on St George Mining’s activities, interested parties are encouraged to reach out via email.
