ABSTRACT
According to Zharikov and Yaroshevskii [2003], geochemistry is the science that studies the occurrence and distribution of chemical elements and their isotopes in the Earth’s substance. Geochemical studies of igneous rocks and massifs built up by them are the most important area in modern petrology. The introduction of new analytical methods, ensuring very low limits of element detection along with the use of very small batches of analyzed substance, has largely contributed to such importance. Analytical studies that have been carried out in the last decades have revealed new patterns in the distribution of many indicator impurity elements in a variety of rocks, which has contributed to the progress in the solution of some problems related to rock, mineral, and ore formation. To perform the discriminatory treatments using geochemical data and to carry out petrogenetic reconstructions, a number of diagrams, plots, and algorithms have been developed [Rollinson, 1993; Sklyarov, 2001; etc.].
