What are the alterations present in gold bearing schist belt?
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In general, the western part of the belt consists mainly of metabasalts, whereas the eastern part contains bimodal volcanic rocks. Several old gold workings are found from Ramagiri to Kilarhalli along a shear zone within this schist belt. This shear zone system, which passes through the Ramagiri-Hungund greenstone belt, is about 50-100 m wide and exhibits both brittle and ductile deformation.
The schist belt is discontinuous and is often concealed under the alluvial soils amidst profusely exposed granitic intru- sive rocks.
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