Cobalt crust

earthy arseniate of cobalt.

See also: Cobalt

References in periodicals archive ?
Present status of investigation and development of ocean cobalt crust resources, Mining and Metallurgical Engineering 19(2): 11-13 (in Chinese).
The Study on the Characteristics of Cobalt Crust and Substrate Rock for Simulation.
The operating principle of cutter cutting cobaltrich crusts with water jet is as follows: cutting force of cutter F and water jet pressure P are applied to the surface of the cobalt crusts at the same time.
Cobalt crusts are formed in areas where iron and manganese has precipitated from seawater over millions of years.
By contrast, the seamounts where cobalt crusts are found tend to be high in biological productivity, Levin says.
Cobalt crusts, being stuck to rock, could be challenging to remove.
This followed a range of disagreements amongst member governments, for instance over a proposed rule that would insist prospectors or contractors notify the authority should they find resources other than polymetallic sulphides or cobalt crusts. This, said a UN note, would "raise issues for both the contractor and the authority: the contractor would need to know how to proceed, while the authority would have to implement legal provisions to deal with the new find".
Ammoniacal leaching of cobalt crusts using S[O.sub.2] as the reductant has been reported(18).
Ammoniacal Leaching and Solvent Extraction of Cobalt Crusts using Sulphur Dioxide.
This followed disagreements amongst member governments, for instance over a proposed rule that would insist prospectors or contractors notify the Authority should they find resources other than polymetallic sulphides or cobalt crusts. This, said a UN note, would "raise issues for both the contractor and the authority: the contractor would need to know how to proceed, while the authority would have to implement legal provisions to deal with the new find".