The ways in which the behaviors of elements are considered in igneous petrology is fundamentally different from the ways the same elements are considered in studies of hydrothermal alteration. In igneous petrology, elements are commonly thought of as being compatible or incompatible between different phases. Specific elements or groups of elements, e.g., large ion lithophile (LILE) or high field strength (HFSE), tend to be controlled by specific substitution mechanisms in minerals. The variations of the concentrations of elements in both minerals and melts are largely modelled by using partition coefficients. Systems can either be closed, e.g., batch melting,...

You do not currently have access to this article.