Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion), Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion). The method used to analyze each element is listed in the detection limits table. For high-grade and mineralized rare earth samples, high sample to volume ratios are utilized in the Inductively Coupled Plasma - Atomic Emission Spectroscopy analysis to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. See ALS documentation [...]
