The Black Granite Quarries

The Exclusive Quarries Group has partnered with leading Quarry groups in Joint Ventures to operate 2 new hill deposits of 4 Ha each and will be shortly opening one more of 7 Ha which is darker and as the above 2 quarries with excellent recovery. 

The Quarry Lease area is undulating in nature, The highest elevation is 532 mRL towards western part of the Quarry Lease area. The lowest elevation is 518 mRL towards south-Eastern part of the Quarry Lease area. The general slope of the area is towards southeast. The drainage pattern of the area is towards south direction. The area is completely covered by sheets and boulders of dolerite. No vegetation is found in the Quarry Lease area. The rock formations occurring in the regional geology belongs to Barakar formation of lower Gondwana but Many basaltic / doleritic dykes and sills (equivalent to Deccan Traps) cut across Gondwana and Lameta formations. These dykes and sills are spread near the surface or spread over the paleo-topography surface in limited area as basaltic flows and form hills wherever exposed.

The major part of the area is occupied by coarse and medium grained black dolerite. The dolerite deposits in this area occurs in the form of sheets and boulders. A dark, medium-grained igneous rock, typically with ophitic texture, containing plagioclase, pyroxene and olivine. It typically occurs in dykes and sills. Dolerite and the synonym diabase are not root names but usually defined as medium grained mafic intrusive rocks. It can include micro gabbro, basalt, andesite, micro diorite and other rock types. The boulder size varies from 1.5-4 mtr in length, 1-3mtr. in width and height varies from 1-2 mtr. Dolerite deposits usually are black in colour uniform over considerable area and depth.

By closed spaced geological mapping and sampling of the QL area and surrounding areas it has been observed that the local trend of the rocks matches with the regional trend. It is marked in the geological plan.