Where are placer deposits found in India?
Where are placer deposits found in India?
Exploration carried out by Atomic Minerals Directorate for Exploration and Research (AMD) during the past five decades has resulted in identifying placer deposits along the coastal stretches of Maharashtra, Kerala, Tamil Nadu (including inland placers), Andhra Pradesh and Orissa.
What are the minerals found in Kerala?
Kerala State is endowed with a number of occurrences/deposits of minerals such as Heavy Mineral Sands ( Ilmenite, Rutile, Zircon, Monazite, Sillimanite) ,Gold, Iron ore, Bauxite, Graphite, China Clay, Fire Clay, Tile and Brick Clay, Silica Sand, Lignite, Limestone, Limeshell, Dimension Stone (Granite), Gemstones.
Which mineral is found in Kerala beach?
The coast sand dunes of Kerala are enriched with six prescribed minerals viz. ilmenite, rutile, zircon, monazite, leucoxene (brown ilmenite), sillimanite and garnet.
What is a placer deposit?
“Placer” deposits are formed by surface weathering and ocean, river or wind action resulting in concentration of some valuable heavy resistant minerals of economic quantities. The placer can be an accumulation of valuable minerals formed by gravity separation during sedimentary processes.
What is a beach placer?
Beach placers form on seashores where wave action and shore currents shift materials, the lighter more rapidly than the heavier, thus concentrating them. Among the examples of beach placers are the gold deposits of Nome, Alaska; the zircon sands of Brazil and Australia; the black… In mineral deposit: Beach placers.
What do you mean by placer deposits Class 10?
What are ‘placer deposits’? Answer: Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. The deposits are called ‘placer deposits’, and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are the most important among such minerals.
Which mineral is most abundant in Kerala?
The correct answer is Monazite. Kerala state is endowed with a number of deposits of minerals such as heavy mineral sand: Monazite. It is a rare phosphate mineral with a chemical composition of (Ce, La, Nd, Th) (PO4, SiO4).
Where is iron ore found in Kerala?
Iron ore : Deposits of Iron ore has been found at various places surrounding Kozhikode. Bauxite : Fairly large deposit of bauxite have been found at various places of the Kollam district like Shooranadu, Adichanelloore etc.
Which mineral is found in monazite sands of Kerala?
Monazite sands comprise of phosphate minerals of elements such as cerium which occur as small brown crystals in the Kerala sands (these monazite sands are mined for both cerium and radioactive thorium oxide).
What are placer deposits 10 geography?
Answer: Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. The deposits are called ‘placer deposits’, and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are the most important among such minerals.
Where are placer deposits found?
Placers can be found in rivers (alluvial placers) and on the coast, particularly in beaches (beach placers). In some locations, the ore minerals that initially were concentrated into a beach placer have been blown inland by coastal winds to form mineral-rich dune sands.