Gold Mineralisation in Uti Block of Hutti-Maski Supracrustal Belt, Karnataka

Gold mineralisation, hosted by varied lithounits, is broadly classified into two types. 1) Syngenetic stratabound type, 2) Epigenetic lode type

Syngenetic stratabound type mineralisation, confined to pyritiferous carbonaceous schist, has little economic significance, whereas economic deposits belong to epigenetic type. Epigenetic lode type mineralisation is hosted by both mafic and felsic rocks. Mineralised zones are confined to structural dilatant zones (shear zones) and are characterised by wall-rock alteration. Mineralogical and geochemical changes are most conspicuous.