Equinox Resources Ltd (ASX:EQN) has begun a program of reverse circulation (RC) drilling work at its Mata da Corda rare earth elements (REE) play in Brazil, seeking to examine the depth of clays there which have already yielded samples grading up 10,110 ppm (parts per million) in total rare earth oxides (TREO). At the same time, ongoing clay sampling at the project has revealed the presence of TREO grades up to 5,879 ppm, 4,733 ppm, 3,928 ppm, 5,212 ppm, 4,067 ppm, 3,690 ppm TREO. Notable anomalies containing titanium dioxide have also been revealed from surface sampling at Mata da Corda – in …