Manganese nodule - Wikipedia
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]
Manganese Nodule - an overview | ScienceDirect Topics
Manganese nodules (also referred to as polymetallic nodules) are spherical precipitates of manganese, iron oxides and other metals (e.g., copper, cobalt, and zinc) that form around a core material, such as a shell fragment or shark's tooth.
Manganese Nodules - Origin and Occurrences - GeologyHub.com
2023年11月26日 · Manganese nodule is an irregular, black to brown, friable, laminated concretionary mass consisting primarily of manganese-oxide minerals (Mn content 15-30%), alternating with iron oxides.
Deep-ocean polymetallic nodules as a resource for critical
2020年2月24日 · Deep-ocean polymetallic nodules (also known as manganese nodules) are composed of iron and manganese oxides that accrete around a nucleus on the vast abyssal plains of the global ocean...
Manganese nodules - World Ocean Review
Together with cobalt crusts, manganese nodules are considered to be the most important deposits of metals and other mineral resources in the sea today. These nodules, with a size ranging from that of a potato to a head of lettuce, contain mainly manganese, as their name suggests, but also iron, nickel, copper, titanium and cobalt.
Manganese nodule | mineralogy | Britannica
Manganese nodules are pebbles or stones about the size of walnuts that are built of onionlike layers of manganese and iron oxides. Minor constituents include copper, nickel, and cobalt, making the nodules a potential ore of these valuable elements.
What’s In a Nodule?: 2021 North Atlantic Stepping Stones: New …
2021年8月26日 · In marine geology, more specifically, the term usually refers to manganese nodules, a mineral type that forms by accreting in concentric layers around a fragment of some other rock or biological material, called a nucleus.
Manganese Nodules - SpringerLink
2014年1月1日 · The existence of manganese (Mn) nodules (Fig. 1) has been known since the late 1800s when they were collected during the Challenger expedition of 1873–1876. However, it was not until after WWII that nodules were further studied in …
(PDF) The Geology of Manganese Nodules - ResearchGate
2013年1月1日 · Poly metallic nodules, called as ferromanganese or manganese nodule in the form of hydroxide are embedded on the sea floor making it one of the most interesting features for the deep-sea mining...
Manganese: Nodules, Uses, Facts, Ore, Alloys, Metal - Geology.com
Manganese Nodules. An additional potential source of manganese is the ferromanganese nodules and crusts that occur on the seafloor in many parts of the world’s oceans. These bean- to potato-sized nodules are currently the target of exploration and research, mostly focused on the equatorial Pacific Ocean. If production of these nodules proves ...