Top panel: Pie charts showing the compositional percentage of individual rare earth elements within the TREO and MHREO intersections in drill hole HK21-005. The bar chart denotes percentage of total value within the overall TREO intersection, with the light REE oxides neodymium and praseodymium making up over 65% of value. Bottom panel: sawn core from 237.75m in HK21-005 showing the REE:Nb relationship in drill core that is evident in the geochemical data shown in Figure 2. Niobium hosted in pyrochlore is commonly within altered wall rock on the margin of REE-rich apatite-calcite-biotite veins and phoscorite dykes.
Top panel: Pie charts showing the compositional percentage of individual rare earth elements within the TREO and MHREO intersections in drill hole HK21-005. The bar chart denotes percentage of total value within the overall TREO intersection, with the light REE oxides neodymium and praseodymium making up over 65% of value. Bottom panel: sawn core from 237.75m in HK21-005 showing the REE:Nb relationship in drill core that is evident in the geochemical data shown in Figure 2. Niobium hosted in pyrochlore is commonly within altered wall rock on the margin of REE-rich apatite-calcite-biotite veins and phoscorite dykes.