Significance of rock fragments and mineral grains in river sands.
River sands of Ranchi plateau consists quartz, quartzite, feldspar, mica, coals, etc. by Dr. Nitish Priyadarshi Sand grains of Ranchi river showing rock particles and other minerals. Sand has become a very important mineral for the expansion of society. Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. River sand is one of the world’s most plentiful resources (perhaps as much as 20% of the Earth’s crust is sand) and has the ability to replenish itself. River sand is vital for human well being & for sustenance of rivers. Rivers are hydraulically complicated and can vary greatly in source materials. Therefore, nearly all river sands show a broad spectrum of textures within the same deposit. Sand deposits of the rivers are accumulations of rock fragments and mineral grains, which have been derived from the weathering and erosion of hard rocks by glacial and river action. Water action is an effective mechanism for wearing away weak...