Industrial role of nepouite from Elov supergene nickel deposit, Northern Urals

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Talovina, I.V.^1 ; Duryagina, A.M.^1 ; Vorontsova, N.I.^1 ; Schtyrlyaeva, A.A.^1

Saint-Petersburg Mining University, 2, 21 Line, Saint-Petersburg

199106, Russia^1

关键词: Hydrothermal process;    Industrial mineral;    Lizardite;    Low temperatures;    Supergene;    Weathering crust;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/7/072004/pdf
DOI  :  10.1088/1755-1315/87/7/072004

来源: IOP

【 摘 要 】

It has been established that nickel varieties of lizardite with a content of 20.64-51.99% NiO refer to nepouite, which was for the first time determined and described as an important industrial mineral component of ore in the Elov supergene deposit. The data of X-Ray diffraction, complex thermal analysis und SEM of nepouite were obtained. Based on the results of research, this mineral was designated as a serpentine of the lizardite-nepouite series. Mg-nepouite was also determined in this assemblage. NiO content in the nepouite varies from 13.00% to 35.18%, MgO - from 18.29% to 44.61%. The thermal analysis of the serpentine shows that the temperature of the Mg-nepouite destruction is 610-615 °C that is specified to a hydrothermal process. It can be assumed that the serpentines of the lizardite-nepouite series in the weathering crust of the Ural deposits can have both exogenous and low-temperature hydrothermal origin.