<P> The state is also emerging in information technology and biotechnology . The IT / ITES revenues of Visakhapatnam is at ₹ 14.45 billion (US $220 million) in 2012--2013 . The development of IT in Tier - II and Tier - III cities like Vijayawada, Kakinada and Tirupati is also improving . In the fiscal year 2012--2013, Vijayawada's IT / ITeS revenues were ₹ 1,153 million (US $18 million) crore . Tirupati with ₹ 693 million (US $11 million) and Kakinada with ₹ 615 million (US $9.4 million) stand next . For the benefit of state i.e., After separating Telangana from andhra, people of andhra protested for special status during the month of January in 2017 </P> <P> Andhra Pradesh is one of the storehouses of mineral resources in India . Andhra Pradesh with varied geological formations, contain rich and variety of industrial minerals and building stones . </P> <P> Andhra Pradesh is listed top in the deposit and production of mica in India . Minerals found in the state include limestone, reserves of oil and natural gas, manganese, asbestos, iron ore, ball clay, fire clay, gold diamonds, graphite, dolomite, quartz, tungsten, steatitic, feldspar, silica sand . It has about one third of India's limestone reserves and is known for large exclusive deposits of barytes and galaxy granite in the international market . </P> <P> Mining is identified as one of the growth engines for the overall development of industry and infrastructure . The Tummalapalle Uranium mine in Andhra has confirmed 49,000 tonnes of ore and there are indications that it could hold reserves totalling three times its current size . 700 million tonnes of metal grade Bauxite deposits in proximity to Visakhapatnam Port . </P>

Which minerals is abundant in the state of andhra pradesh