CONTENTS AND CHEMICAL FORMS OF AU, TE, SB AND AS IN MINERAL-FORMING SOLUTIONS GOLD-SULFIDE-TELLURIDE EPITHERMAL DEPOSITS - ON FLUID INCLUSIONS DATA

Fluid inclusions in quartz samples taken as representative in respect of main mineral assemblages of three gold-sulfide/telluride epithermal ore deposits were studied. Gold, arsenic, antimony and tellurium cont ent were determined by use of neutron activation and atomic absorption analysis, the corresponding values being as following: 10(-6)-10(-4,5 ), 10(-2,5),-10(-1,2), 10(-2,2)-10(-0,5), 10(-6)-10(-4) M. The complex ions Au(HS)(2)(-), H3AsO30, HSb2S4- and HTe-were found as predominant chemical forms of Au, As, Sb and Te in ore forming solutions, Covaria tive character of gold distribution in relation to that of arsenic and antimony in fluid inclusions is interpreted as indicative of the prob able gold transport in the form of sulfur-bearing complex compounds wi th arsenic and/or antimony in the sulfide oreforming processes. The re ciprocal correlation of gold and tellurium content could be considered as an evidence of Te ore-concentrator role in the Au-Te mineralisatio n.