The trace element contents on the surface originated from mineralization would depend to the thickness of the calcrete layer above the ore deposit on the surface. A very thick layer of calcrete may not allow for much dispersion of the elements of interest in the surface. These elements may be concentrated in non-magnetic and magnetic part of calcrete. Based on the current research, mineralogica...

This report describes a new mapping project in the Cassiar Mountains, located 70 kilometres northeast of Dease Lake in northern British Columbia. The area is attractive for two reasons. First, it contains rocks that are likely correlative with those of the Yukon-Tanana Terrane, a tract with known volcanogenic massive sulphide potential. Second, combined geological and regional geochemical data ...

Hydrogen sulphide is still a potential hazard in several occupations"2 and especially in sulphate pulp mills (P Jappinen, academic dissertation) and oil refineries. Blood sulphide may be used as an indicator of an excessive human hydrogen sulphide exposure. Fatal hydrogen sulphide concentrations are known.34 Blood sulphide concentrations have been determined before by ion selective electrodes c...

Oxygen consumption, ATP production and cytochrome c oxidase activity of isolated mitochondria from body-wall tissue of Arenicola marina were measured as a function of sulphide concentration, and the effect of inhibitors of the respiratory complexes on these processes was determined. Concentrations of sulphide between 6 and 9 µmol l-1 induced oxygen consumption with a respiratory control r...

The corrosion behaviour of copper was studied in anoxic solutions containing different concentrations of sulphide (10–10 mol L) and chloride (0?1–5 mol L) under stagnant and controlled convective conditions. The main determinants of the structure and properties of the copper sulphide (Cu2S) films formed are the rate of sulphide transport to the surface relative to the rate of its interfacial re...