Abstract
Pyrite and arsenopyrite individuals were investigated in ore samples from the mesothermal Klyuchevskoe deposit. The internal structure of the individuals was determined by structural etching. Zoning of two orders was described. A correlation was established between the size of growth layers and the thickness of first-order zones. The anisotropic distribution of minor elements in particular zones and growth sectors was detected. It was found that the internal structure of metacrysts changes regularly, depending on their position relative to productive and nonproductive veinlets of different age. It was shown that, taking into account the volume effects of crystal growth, local changes in the geochemical parameters of mineral-forming medium (variations in trace element concentrations, density of mineral-forming solutions, character of temperature variations, etc.) can be estimated from variations in oscillation periods. The prospects of using pyrite-arsenopyrite and other geothermometers to study crystals consisting of several simple forms are discussed. It was concluded that the characteristics of the internal structure of pyrite metacrysts provide information on the stages of deposit formation.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call