CAJ | 학술논문

水银洞金矿床是黔西南典型的特大型卡林型金矿床之一.但其成矿流体来源尚有争议.通过对水银洞金矿床脉石英和方解石中流体包裹体的温度与压力、盐度与密度、包裹体成分和包裹体H和O同位素等方面的研究,指出水银洞卡林型金矿床成矿流体属中低温(96.7～220℃)、低盐度(NaCl) 0.635%～9.861%,平均值为4.282%±2.260%、中等密度(0.725～0.977 g/cm~3,平均值为0.910±0.061 g/cm~3);脉石英阶段流体水化学类型属Cl~-- Na~+型或SO_4~(2-)- Cl- Na~+型,方解石阶段属SO~_4(2-)- Cl~-- Ca~(2+)型.成矿流体压力可能为高-超高压(160±40 Mpa);成矿流体主要是大气降水形成的地下热水,可能有部分岩浆热液的掺入.
수은동금광상시검서남전형적특대형잡림형금광상지일.단기성광류체래원상유쟁의.통과대수은동금광상맥석영화방해석중류체포과체적온도여압력、염도여밀도、포과체성분화포과체H화O동위소등방면적연구,지출수은동잡림형금광상성광류체속중저온(96.7～220℃)、저염도(NaCl) 0.635%～9.861%,평균치위4.282%±2.260%、중등밀도(0.725～0.977 g/cm~3,평균치위0.910±0.061 g/cm~3);맥석영계단류체수화학류형속Cl~-- Na~+형혹SO_4~(2-)- Cl- Na~+형,방해석계단속SO~_4(2-)- Cl~-- Ca~(2+)형.성광류체압력가능위고-초고압(160±40 Mpa);성광류체주요시대기강수형성적지하열수,가능유부분암장열액적참입.
The Shuiyindong gold deposit is one of the largest typical Carlin-type gold deposits. The gold deposit locates at about 20 km NW of the downtown Zhenfeng County in southwestern Guizhou Province, China. This paper studied temperature, pressure, salinity, composition and oxygen-hydrogen isotope compositions of fluid inclusions in quartz and calcite inclusions in veins of the gold deposit. Study results indicated that the ore-forming fluid of the Shuiyindong gold deposit belongs to low-medium temperature (96.7～220℃), low salinity (14.282%±2.260 % of NaCl) and medium density (0.910 ±0.061 g/cm~3) fluid. The hydrochemical type of the fluid inclusions found in quartz inclusions belongs to Cl~--Na~+ or SO_4~(2-)- Cl- Na~+ type, while the hydrochemical type of the fluid inclusions found in calcite inclusions belongs to SO_4~(2-)- Cl~--Ca~(2+) type. The ore-forming fluids with a pressure from high to super high (160±40 Mpa) mainly originated from subsurface hydrothermal water, probably, immingled with certain parts of magmatic-hydrothermal water.