摘要
通过硫同位素低温平衡系统,分析平衡条件下δ^(34)S_(H_2S)与δ34S热液偏差,获得成矿流体的含硫组分以H_2S为主。成矿阶段δ~(34_S值变化范围狭窄,呈塔式分布,具有岩浆硫特征,柿竹园矿床矿石中的硫来自岩浆流体,即千里山花岗岩。硫同位素fO_2—pH值关系图,投影得出350℃时,fO_2为-28.3^-31.5;250℃时,fO_2为-35.4^-37.5。
The hydrothermal deviations of δ^(34)S_(H_2S) and δ^(34)S under equilibrium conditions were analyzed by the sulfur isotope low-temperature equilibrium system.The sulfur-containing components of the ore-forming fluids are mainly H_2S.The variation range of the δ^(34)S value in the metallogenic stage is narrow,present a tower-type distribution,with magmatic sulfur characteristics.The sulfur in the Shizhuyuan deposit is derived from magmatic fluids,scilicet it is from the Qianlishan granite.When the sulfur isotope fO_2—pH relation diagram is projected to 350℃,fO_2 is-28.3 ^-31.5;when it is 250℃,fO_2 is-35.4 ^-37.5.
出处
《国土资源导刊》
2017年第2期64-68,共5页
Land & Resources Herald
