新疆托里齐Ⅰ金矿地球化学及石英热释光特征

Geochemical features and thermoluminescent evaluation marks of quartz in Qiqiu-Ⅰ gold deposit,Tuoli in Xinjiang

齐Ⅰ金矿产于中上石炭统海相基性火山喷发沉积岩中 ,典型中温热液矿床。成矿热液为Na+ -K+ -SO2 -4 -Cl--HCO-3 型 ,主要来源于深部隐伏的花岗岩 ,部分来源于天水和变质水。矿质主要来源于花岗岩 ,部分来源于热液对火山喷发沉积岩特别是玄武岩的萃取。成矿温度 2 70～ 2 0 0℃。石英热释光特征是热液成矿活动分期和评价含矿性的重要标志。

Qiqiu-Ⅰ Gold deposit Tuli,in Xinjiang Province occurcd in the marine basic volcanic-sedimentary rocks of middle and upper Carbonicfeous,and is typical of mesothermal deposit.The author has demenstrated that the ore-forming is Na +-K +-SO 4 2- -Cl --HCO 3 -type originnated from the buried anatectic granite, partly from volcanic-sedimentary rocks leached by hydrothermal solution.The ore-froming temperatures range are mainly in 270～200℃. The thermoluminescent characteristics of quartz are important marks for evaluating the gold-bearing feature.