Sulfur-loving element (also known as copper-loving element): It has an outer electron shell structure of 18 or 18+2, which has high electronegativity and forms a high covalent bond with sulfur. Sulfides and sulfur salts produced by the combination of sulfur-loving elements and sulfur often coexist with copper sulfide, and are easy to melt in iron sulfide melt, mainly concentrated in sulfide-oxide transition zone; Such as copper, cobalt, nickel, lead, etc.

Oxyphilic element (also called MagmaElemental element): It has an electron shell structure of inert gas, that is, the outermost electron shell of the ion has a stable structure of 8-electron inert gas type (s2p6), with low electronegativity, and forms a high ionic bond with oxygen. Oxides, oxygen-containing salts and other minerals formed by the combination of oxygen-loving elements and oxygen are the main mineral forms of the lithosphere, which are easily soluble in silicate melts and mainly enriched in the lithosphere. Such as silicon, boron, aluminum, etc.