Figure 3. Macro (hand-lens) close-up of a polished core face from the main pegmatite interval, showing light brown minerals in direct association with magnetite. Portable XRF screening of this assemblage returned qualitative indications of elevated niobium, yttrium, phosphorus, and zirconium; the light-brown mineral coincides with the strongest gamma-ray spectrometer response logged on core. pXRF indicative only; see pXRF disclosure. Read More
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