The relevance of the work is explained by need to restore lost potential polymetallic extraction from deposits Sadonsky ore node using existing infrastructure and favorable geographical conditions for yearround operation. purpose work. Theoretical experimental substantiation technological possibility economic feasibility converting traditional development technologies obtaining metals other mar...

Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here w...

BACKGROUND There is growing interest in mining polymetallic nodules from the abyssal Clarion-Clipperton Zone (CCZ) in the tropical Pacific Ocean. Despite having been the focus of environmental studies for decades, the benthic megafauna of the CCZ remain poorly known. To predict and manage the environmental impacts of mining in the CCZ, baseline knowledge of the megafauna is essential. The ABYSS...

The use of mineral resources has always been critical for human development [...]

• Skarn-type mineralization of the Cuonadong Sn-W-Be polymetallic deposit occurred at ca. 15 Ma. Skarn-hosted scheelite can be divided into an older type 1 and a younger 2 scheelite. The ore-forming fluid was exsolved from Miocene leucogranite. Geochemically isotopically, modified by intense fluid-rock interaction during skarnization greisenization. is first rare-metal with extraordinary metall...

Shanmen silver deposit is located on the south section of Daheishan horst polymetallic mineralization belts in central Jilin province, Northeast China. The supplies not only greatest portion and a significant amount gold also. exhibits closely spatiotemporal relationship with Mesozoic ore-hosting diorite granite intrusions basic-felsic dikes. Among dikes felsite one occurred at same fault zone ...

As an important tectonic unit of Eastern Tethyan domain, Sanjiang orogenic belt started from the expansion, subduction, subtraction and closure Paleozoic Paleo-Tethys Ocean, went through opening Neo-Tethys Ocean subduction collision process Indian continent ended in Himalayan comprehensive intracontinental convergence uplift orogeny, forming a giant composite composed several island arc belts s...

A series of extensional structures, including the southern Tibet detachment system (STDS), north-south trending rifts (NSTR), and northern Himalayan gneiss dome (NHGD), developed from collision compression between Indian Eurasian plates. These tectonic movements were accompanied by magmatism polymetallic mineralization. Cuona Rift (CR) is located on STDS next to Yalaxiangbo Dome (YD) passes thr...

Iron ore pellets are sintered, centimetre-sized spheres of ore with high iron content. Together with carbonized coal, iron ore pellets are used in the production of steel. In the transportation from the pelletizing plants to the customers, the iron ore pellets are exposed to different loading situations, resulting in degradation of strength and in some cases fragmentation. For future reliable n...