Pasofino says several holes contain broad intervals of pyroxene gneiss with sulphide minerals – this is encouraging as gold at the nearby Tuzon and Dugbe F deposits is hosted by a similar lithology.

know the difference between contact and regional metamorphism we will use these rock names: schist, gneiss, greenstone recognize that different minerals occur at different conditions of temperature ...

Lewisian gneiss is metamorphic rock, which means it was formed by being heated up and put under great pressure, deep within Earth’s crust. This process causes minerals to crystallise out, resulting in ...