Proceedings of GIA


RARE ELEMENTS AS GEOCHEMICAL CRITERIEN OF PHYSICAL-CHEMICAL CONDITIONS OF ORES FORMATION IN EAST CAUCASUS PYRITE FIELDS

(N.A.Novruzov)



Summary


It has been defined the indicators of elements-admixtures concentrations and values for quantitative correlations some of them (S/Se, Se/Te, Ga/In, Sb/Bi) in ore-forming minerals and texture-mineralogical types of ores can be used as a criterion for assessment of physico-chemical conditions of mineral formation in pyrite fields of region. By more approachable methods conditional indicator of acid-alkalinity solutions and relative assessment of redox conditions of pyrite-polymetallic ores formation were estimated. It was de-termined the cadmium geothermometer is more reliable in assessment of temperature conditions of these ores, and for copper-pyrrhotine oregenesis-geothermometer based on tem-perature dependence of cobalt distribution between coexisting pyrite, pyrrhotine and chalcopyrite.