Drill core photo and QEMSCAN imagery from drill hole HK20-004 showing altered magnetite needles with reaction rims of pyrite–pyrrhotite–iron carbonate and bastnaesite (LREE)–pyrochlore (Na,Ca)2Nb2O6(OH,F) in a matrix of apatite with calcite inclusions containing monazite ((Ce,La,Nd,Th)PO4) quartz and potassium feldspar. The magnetite-quartz-potassium feldspar assemblage is indicative of alteration proximal to an IOCG fluid source.
Drill core photo and QEMSCAN imagery from drill hole HK20-004 showing altered magnetite needles with reaction rims of pyrite–pyrrhotite–iron carbonate and bastnaesite (LREE)–pyrochlore (Na,Ca)2Nb2O6(OH,F) in a matrix of apatite with calcite inclusions containing monazite ((Ce,La,Nd,Th)PO4) quartz and potassium feldspar. The magnetite-quartz-potassium feldspar assemblage is indicative of alteration proximal to an IOCG fluid source.