Morphological and Economic Aspects of the Heavy Mineral Suit Near Godagari of Rajshahi Region, Bangladesh

摘要

The paper deals with the characteristics of a point bar of the river Padma near Godagari region, Rajshahi with emphasis on sphericity, roundness and reserves of economic heavy minerals like zircon, rutite, monazite, garnet, magnetite, ilmenite and leucoxene. The sphericity value indicates that maximum (63.43%) of the grains are equant and the minimum of the grains are acicular within the range of 0.45 to 0.55. The roundness values indicate that the maximum number of grains (51.24%) are within the range of roundness class between 0.12 to 0.25. The relation trend of projection sphericity and Wandell's roundness scale indicates that the decrease of roundness relates to increase of sphericity which is very much distinctive and significant. The point barcontains 3.06 million tons of raw sands of which 0,93 million tons are economic heavy minerals. The relative abundance percent indicates that garnet is the maximum abundant and monazite is the minimum abundant of the different heavy minerals present inthe point bar.