A Geochemical Study on Minor Elements of the Sangasho type "Kieslager"

Abstract

Fresh and altered specimens of diabase and phyllite from the Sangasho Mine, Miyazaki Prefecture, have been analyzed for minor elements, such as Cu, Cr, Ni, Mn, Ti, V and Zn by means of chemical and spectrographic methods.
The content of these minor elements varies with the grade of mineralization. The country rocks and ore minerals usually contain Ni, Cr, Ti and V; these_are more concentrated in ores closely associated with diabasic rocks. It therefore is presumed that the Sangasho deposits have a genetic relation to these basic rocks.
The effects on the country rocks during the formation of "Kieslager" were restricted to within a few meters from the ore bodies. (These effects are especially shown by the content of Cu and Zn.)
It was also found that the Sangasho diabase generally contains less Cu and more Cr than any basic rock hitherto reported.