CRYSTALOMORPHOLOGICAL CHARACTERISTICS OF PYRITE IN HYDROTHERMAL GOLD DEPOSIT

On the basis of the geological characteristics of primary gold deposit s, with an experiment on modelling the environment of gold mineralizat ion, the evolutionary array and growth mechanism and their relationshi p with gold mineralization of the crystal forms of pyrite, i.e. pentag onal dodecahedron, octahedron and cube, formed under the different val ues of fo(2), fs(2), T (degrees C), P(Pa) and C (salinity) in the hydr othermal system are studied. The results show that the crystal form of pyrite is not only related to the temperature L, but also affected by the geochemistry of iron and sulfur which formed pyrite and other phy sicochemical conditions. Our results promote the study of gold mineral ization, genetic and prospecting mineralogy.z