Polymetallic nodules . These are abiotic mineral resources and found as nodules in oceans.
Polymetallic nodules are Ferrous-Magnese oxide deposits. They are of potato shape, porous and black earthy colour. Their size ranges from 2 to 10 cm in diameter.
Nodules occur at nearly 4 to 5 km depth in the deep oceans . They take about one million year to grow to a size one mm. India has obtained the technology of exploiting these mineral nodules from the seabed and was the first country in the world to obtain permission from United Nations!
Polymetallic nodules are Ferrous-Magnese oxide deposits. They are of potato shape, porous and black earthy colour. Their size ranges from 2 to 10 cm in diameter.
Nodules occur at nearly 4 to 5 km depth in the deep oceans . They take about one million year to grow to a size one mm. India has obtained the technology of exploiting these mineral nodules from the seabed and was the first country in the world to obtain permission from United Nations!
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