Processes of Rock and Ore Formation

The igneous processes which give rise to ore deposits are broadly classified into three types (i) magmatic concentrations and segregations, (ii) contact metasomatism, and (iii) hydrothermal processes. [Pg.42]

Dissemination Disseminated crystallisation without concentration Most diamond bearing kimberlite pipes [Pg.43]

Segregation Crystallisation, differentiation and accumulation Bushveld chromite still water complex Sukinda chromite [Pg.43]

Residual liquid segregation Crystallisation from and accumulation in residual magma Bushveld titanomagnetite [Pg.43]

Residual liquid injection Same as above, followed by injection Most pegmatite and carbonatite veins [Pg.43]

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