Jharkhand (30 per cent) and Meghalaya (5 per cent). The remaining 8 per cent resources are
      available in Rajasthan, Andhra Pradesh, Gujarat and Tamil Nadu. The total resources of rock
      phosphate as per UNFC system in 2015 are placed at 312.68 million tonnes. Of the total
      resources, 34 per cent are in Jharkhand, 31 per cent in Rajasthan, 19 per cent in Madhya Pradesh,
      8 per cent each in Uttar Pradesh and Uttarakhand. Meagre resources are located in Gujarat and
      Meghalaya.
      Other Minerals
            Other minerals occurring in significant quantities in India are bentonite (Rajasthan, Gujarat,
      Tamil Nadu, Jharkhand and Jammu and Kashmir), corundum (Karnataka, Andhra Pradesh,
      Rajasthan, Tamil Nadu, Telangana and Chhattisgarh), calcite (Andhra Pradesh, Rajasthan,
      Madhya Pradesh, Tamil Nadu, Haryana, Karnataka, Uttar Pradesh and Gujarat), fuller’s earth
      (Rajasthan, Telangana, Arunachal Pradesh, Assam, Madhya Pradesh and Karnataka), garnet
      (Tamil Nadu, Orissa, Andhra Pradesh, Rajasthan and Kerala), pyrites (Bihar, Rajasthan,
      Karnataka, Himachal Pradesh, West Bengal and Andhra Pradesh), steatite (Rajasthan,
      Uttarakhand, Kerala, Maharashtra, Andhra Pradesh and Madhya Pradesh), wollastonite
      (Rajasthan and Gujarat), zircon (beach sands of Kerala, Tamil Nadu and Orissa) and quartz and
      silica minerals and Granite are widespread and occur in nearly all states. Besides, the country has
      vast marble, slate and sandstone deposits. Marble occurs mainly in Rajasthan, Gujarat and
      Jammu and Kashmir; slate in Andhra Pradesh and Haryana.
      Geological Survey of India
            Geological Survey of India (GSI) the premier earth science organization of the country, is
      the principal provider of basic earth science information to the Government, Industry and the
      geoscientific sector. Beginning in 1851 as a department engaged primarily in research for coal,
      GSI in its last 163 years of existence has expanded its activities manifold and has been involved
      either directly or indirectly in almost all areas of nation building. The vibrant steel, coal, metal,
      cement and power industries which expanded phenomenally in the post independence era, bear
      eloquent testimony to GSI’s contribution to national development.
            GSI is now the custodian of one of the largest and most comprehensive earth science
      databases developed over the last one and half century. Its Charter of operation laid down by the
      Government of India details the scope of activities and responsibilities of GSI that encompasses
      practically the entire gamut of earth science activities. Creation and updation of national
      geoscientific information and knowledge base through ground, marine and airborne surveys and
      their dissemination are the primary goals of GSI. The present activity domains of GSI include
      surface mapping, aerial and remote sensing surveys, offshore surveys, exploration for mineral
      and energy resources, engineering geology, geotechnical investigations, geoenvironmental
      studies, geology of water resources, geohazard studies, research and development, training and
      capacity building and information services etc.
      Relevant Website: www.gsi.gov.in
      Online Core Business Integrated System and National Aerogeophysical
      Mapping Programme
            GSI launched, in 2017, an Online Core Business Integrated System (OCBIS) which is a
      state-of-the-art IT enabled system encapsulating all the main activities of GSI using an online