CAJ | 학술논문

利用江西宜春414岩体中的钠长石花岗岩作为实验初始物,制备含不同P_2O_5含量(0.27%～7.71%)的实验玻璃,本次实验研究了100 Mpa、850℃和800℃条件下Sn在流体与富磷过铝质熔体相间的分配.实验结果显示,Sn在流体与熔体相间的分配系数(D_(Sn)~(flusd/melt))变化于2.10~(-4)×10~(-4)～1.36×10~(-3)之间,指示Sn强烈趋向于在富磷过铝质熔体中富集.随体系中P_2O_5,含量从0.27%增至1.91%,Sn在流体与熔体相间的分配系数逐渐增加,当体系中P_2O_5含量进一步增加时,Sn在两相间的分配系数呈降低的趋势.本次实验结果表明,P可能不是Sn以流体相形式进行搬运的主要络合剂.
이용강서의춘414암체중적납장석화강암작위실험초시물,제비함불동P_2O_5함량(0.27%～7.71%)적실험파리,본차실험연구료100 Mpa、850℃화800℃조건하Sn재류체여부린과려질용체상간적분배.실험결과현시,Sn재류체여용체상간적분배계수(D_(Sn)~(flusd/melt))변화우2.10~(-4)×10~(-4)～1.36×10~(-3)지간,지시Sn강렬추향우재부린과려질용체중부집.수체계중P_2O_5,함량종0.27%증지1.91%,Sn재류체여용체상간적분배계수축점증가,당체계중P_2O_5함량진일보증가시,Sn재량상간적분배계수정강저적추세.본차실험결과표명,P가능불시Sn이류체상형식진행반운적주요락합제.
The albite granite of Yichun stock, added with 0. 27%-7.71% P_2O_5, was chosen as the initial composition. The partition coefficients of Sn between the phosphorus-rich peraluminous granitic melt and coexisting aqueous fluid were determined at I00 Mpa and 800 ℃ and 850 ℃. The experimental results show that the partition coefficients (D_(Sn)~(flusd/melt)) ((D_(Sn)~(flusd/melt)) where C_(fluid) and C_(melt), are the concentrations of Sn in the aqueous fluid and the melt, respectively) vary from 2.10 x 10~(-4) to 1.36 x 10~(-3), indicating that Sn partitions preferentially into the hydrous melts. The partition coefficients of Sn increased with increasing P_2O_5 content from 0. 27% to 1.91%,but decreased when the P_2O_5 content further increased. According to our experimental results, P is probably not the main complexant for the transportation of Sn in fluids evolved from a granitic magma.