manganese nodule

(redirected from Polymetallic nodule)
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manganese nodule

n
(Geological Science) geology a small irregular concretion found on deep ocean floors having high concentrations of certain metals, esp manganese
References in periodicals archive ?
1: The Polymetallic Nodule Ecosystem of the Eastern Equatorial Pacific Ocean.
In the polymetallic nodule areas of the central Eastern Pacific, two species of cosmopolitan distributed mobile epifauna holothurians dominate the abyssal ecosystem.
India has been granted a polymetallic nodule exploration licence near the Chagos, which Mauritius has laid claim to from the British.
A number of factors have inhibited progress towards commercial exploitation of polymetallic nodule deposits.
16-20 September 2004 Development of a geological model of the polymetallic nodule resources in the Clarion-Clipperton Fracture Zone: workshop held in Nadi, Fiji.
France): Future development of polymetallic nodule deposits.
Last September, Nautilus's 100%-owned subsidiary, Tonga Offshore Mining, released a maiden mineral resource estimate for its Clarion-Clipperton fracture zone polymetallic nodule project, located within the Central Pacific Ocean.
According to the "Law of the Sea Convention of the United Nations" and the promise of Chinese government, China will hold the exclusive prospecting and preferable mining rights in the retained polymetallic nodule property after finishing the abandonment for 50% tapping area in March this year.
The Technical Report describes in detail the upgrade and increase in the Mineral Resource estimate for TOML's polymetallic nodule project that the Company announced on May 26, 2016 (see links section below).
Speaking at an ocean mining industry round table meeting held in Tokyo, Japan on 28 January 2014, Secretary-General Odunton said the first of a series of three workshops to develop a standardized taxonomy for megafauna associated with polymetallic nodule deposits was convened in 2013.
According to Union Secretary of Earth Sciences Ministry Shailesh Nayak, the National Institute of Ocean Technology is developing a crawler to take up underwater sea mining below 6,000 metres for polymetallic nodule mining.
We will develop joint strategies to harness the potential for mutually beneficial cooperation in the field of deep sea exploration and development of hydrocarbon resources, polymetallic nodules, and other marine resources utilizing strengths in the field of maritime research and training to develop mutually beneficial cooperation.