Banded Chromite-Fuchsite Quartzite in the Older Supracrustal Sequence of Karnataka

A small enclave of ancient supracrustal rocks (Sargur Group) in Kamataka contains an interesting occurrence of fuchsite quartzite with layers of chromite and other heavy minerals like magnetite, tourmaline, rutile and zircon. The opaque and non-opaque heavy mineral suite is suggestive of a source region rich in sialic components with subordinate ultramafic rocks. This is consistent with the spatial association of these supracrustal rocks with a vast gneissic complex containing numerous enclaves of chromite-rich ultramafic rocks in the vicinity.