CONDITIONS OF GOLD-SULFIDE-QUARTZ MINERALIZATION FORMATION OF ARKCHANGELSK ORE AREA (MIASS GOLD-BEARING REGION, SOUTH URALS)

摘要

Thus, according to salinity/homogenizationrntemperature ratio there are 2 fluid inclusion grouprnin quartz from Murashkina Gora deposit. The mainrngroup is from quartz of veins with Au fromrnlistvenites have homogenization temperatures 147–rn203 ℃. It was shown that quartz with relativelyrnlow-temperature fluid inclusions (homogenizationrntemperatures 103–140 ℃) contains the reliablyrnestablished Au mineralization. Obviously, differentrnhomogenization temperatures marked out 2 stadesrnin quartz veins formation. Salt compositionsrndetermined in fluid inclusions are watered solutionsrnof NaCl and KCl. Presence of KCl in fluidsrnindicated its addition from granitoid magmaticrnrocks, and NaCl – from seawater. Salinities arernhigher than seawater and similar for both studiedrnveins.rnResearches are supported by RFBR (projectsrnNo 12-05-31483мол_а, 14-05-31330 мол_а) andrnYoung Scientist UB RAS project (No 13-5-НП-rn377).