Abstract
A new method of estimation of the bulk coefficients of minor component distribution was worked out on the basis of analysis of covariations of minor element concentrations in intrusive bodies. The partition coefficients for some minor elements were calculated using the geochemical data for the Elet-Ozero intrusive complex (North Karelia). The analysis performed shows that the whole rock series of the Elet-Ozero massif from the early basic rocks to leucocratic nepheline syenite was formed during a single process of crystallization differentiation controlled by the same partitioning coefficients as those in common basaltic magmas. The signs of sulfide liquid separation during the evolution of the magmatic system provide evidence for the probable association of sulfide ore deposits with plutons of the Elet-Ozero type.
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