Viridis Mining and Minerals Ltd (ASX:VMM) says drilling work at the Cupim South and Centro Sul prospects of its Colossus rare earth project in Brazil has revealed several zones of high-grade mineralisation, including 21 metres at 15,339 ppm (parts per million) TREO (total rare earth oxides) at Cupim South. At Centro Sul, a maiden auger drilling program showed grades of up to 6,666ppm TREO, and indicated the presence of a large quantity of high-grade mineralisation in general across the prospect. Viridis says these results contribute to positive expectations for Colossus’ initial feed, and open…