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III MINERAL INVESTIGATIONS arranged according to the alphabetical
ENGINEERING GEOLOGY AND WATERSUPPLY INVESTIGATIONS
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acid analyses Andhra appears Assistant associated bands beds boreholes calcite carried cent chemical chromite clay coal Coalfield collected complete composition concentration consists contains covered deposits depth detailed determined diameter district Drilled east ending examined exposed fault field folds formation fossils further Geol Geological Geologist gneisses grade grains granite hematite hill important included India indicate iron kaolin kaolinite laterite layer lignite limestone located lower Madhya Madras mapping material methods metres mica miles minerals Mines muscovite observed occur officers origin particles percentage places Pleistocene portion Pradesh present quartz quartzites ratio recorded reported reserves ripples river rocks samples sand sandstone Sarvashri seams shales shear Shri solution specimen stage structure suggested suitable Survey Table taken thickness tons Upper varies veins X-ray zone