Amaravathi, most important geological heritage site

Vijayawada: The present Capital region development area, which is already identified as a significant zone, has started attracting the attention of geologists across the country. Amaravati has rocks that are almost 3,000m-year old.Vinukonda is famous for copper, lead and zinc mineral sulphides belonging to Agnigundala belt.
The GSI studies have found out three prominent geological formations culminating at this new Capital city. The Kondapalli region in the Eastern Ghats, AP, consists of high-grade ‘granulite facies’ rocks — charnockites, in which chromite occurs. Chromite is the most important ore of Chromium, which is used as a refractory metal and for the manufacture of Ferro Chrome Alloys.
More explorations in the said areas, will certainly support the newly formed state’s economy, said Professor M. Jagannadha Rao of Andhra University. “The Chief Minister can concentrate on this aspect, which would be helpful for the state,” he said.
Diamond exploration possible in Vindhyas .Geologists have found that the Vindhyan geological system can still be considered for diamond exploration. Known for diamond bearing conglomerates, these rocks are found in the Krishna basin, which is called the Kurnool system.
The diamonds, which are derived from source rocks, are transported in the Krishna river bed, along with the pebbles. They settle in the pot holes in the bottom of the riverbed. These are the target areas for diamond exploration.
Mining was active in this region for the valuable ore chromite, which is a strategic mineral for ferro chrome industries, refractory industries and also it is the material for high temperature- resistant equipment, generally used by defence, for its applications. The host rocks for chromite are precambrian rocks characterised by khondalites and charnockites, according to him.
This is not only important academically, but it has proved to be of economic importance where extensive mining was carried out for chromite and base metals — copper, lead and zinc in recent times.
Besides, historical reports of diamond occurrence made this place significant, Prof. Rao said, adding Amaravati’s economy can be boosted by exploration of these areas.
Read more here