Heavy Minerals Deposit In The Major Rivers Of Bangladesh.

      Аннотация: Bangldesh has numerous rivers which are carried out over it. Among these rivers, only three rivers are dominated all over the country which are comes from Himalaya. Due to the denudation process, about 2 billion tones of sediments are carried per year, and about 40% of them are deposited in fluvial system and forming numerous bar. The most of the bar deposits along the three major rivers (The Padma, The Brahmaputra-Jamuna and The Meghna) are comprises heavy and light minerals. The heavy minerals are consist of non-opaque (zircon, tourmaline, rutile, epidote, staurolite, garnet, chlorite, monazite, biotite, hornblende, kyanite and leucoxene) and opaque (ilmenite, magnetite, hematite, and limonite). But this report is mainly emphasis on five economic minerals concentration, variation and their reserve. A total of 4,54,253 tons of crude sands containing 1,58,988 tons of heavy minerals are available in the Alatuli char deposits of the Padma River. In the Mahongonj char, total of 6,11,632 tons crude sand containing 1,10,093 tons of heavy minerals. And in the Srinagar char of the Meghna River, the total of 2,97,768 tons crude sand containing 41,687 ton of heavy minerals.

Ключевые слова: Bangladesh, Rivers, Heavy Minerals