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Polymetallic nodules, also called manganese nodules, are mineral concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. As nodules can be found in vast quantities, and contain valuable metals, deposits have been identified as a potential economic interest. [ 1 ]
The CCZ is regularly considered for deep-sea mining due to the abundant presence of manganese nodules. The CCZ extends around 4,500 miles (7,240 km) East to West [ 4 ] and spans approximately 4,500,000 square kilometres (1,700,000 sq mi). [ 5 ]
Primarily, the manganese ore is composed of the minerals braunite, bixbyite, and hausmannite, with subordinate iron and silica. [ 1 ] [ 6 ] Typically, the manganese ore bodies are 5–20 m thick, with strike lengths of up to 10 km. Depth extension reaches up to 400 m, with reserve estimates exceeding 100 Mt, with a life-of-mine of approximately ...
Nodule is also used for widely scattered concretionary lumps of manganese, cobalt, iron, and nickel found on the floors of the world's oceans. This is especially true of manganese nodules. Manganese and phosphorite nodules form on the seafloor and are syndepositional in origin. Thus, technically speaking, they are concretions instead of nodules ...
Polymetallic nodules on the deep seabed in the CCZ Example of manganese nodule that can be found on the sea floor. Polymetallic nodules are found at depths of 4–6 km (2.5–3.7 mi) in all major oceans, but also in shallow waters like the Baltic Sea and in freshwater lakes. [23] [24] They are the most readily minable type of deep sea ore. [25]
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Destiny 2: The Final Shape is a major expansion for Destiny 2, a first-person shooter video game by Bungie.Representing the eighth expansion and the seventh year of extended content for Destiny 2 and 10th year of content for the Destiny franchise, it was released on June 4, 2024, after being delayed from its original February 2024 date.
[4] [5] After temporarily being attached to the port side of the Unity module, [6] [7] it was moved to its permanent location on the forward end of the Destiny module on 14 November 2007. [8] Harmony added 70 m 3 (2,500 cu ft) to the station's living volume, an increase of almost 20%, from 420 m 3 (15,000 cu ft) to 490 m 3 (17,000 cu ft).