摘要
矿前期热液温度348—210℃,压力139.6×10~5—17.2×10~5Pa,盐度0.06％—2.33％(NaCl,Wt.,下同),pH为7.37—9.16,主要成分为Ca^(2+)、Na^+阳HCO_3^-,铀浓度0.0002—0.0027mol/L。矿期热液温度268—145℃,压力3.9×10~5—3.19×10~5Pa,盐度0.06％—11.68％,pH为6.60—7.61,主要成分为Ca^(2+)、HCO_3^-、F^-和SO_4^(2-),铺浓度0.0017—0.052mol/L。矿后期热液温度165—100℃,压力5.7×10~5—1.1×10~5Pa,盐度0.06％—6.01％,pH为5.28—8.03,主要成分为Ca^(2+)、HCO_3^-和SO_4^(2-),铀浓度0.0009—0.0165mol/L。矿前期、矿期热液主要来自地壳深部,矿后期热液主要来自地壳浅部。
During pre-ore stage the temperature of ore-forming fluid is 348—210℃, the pressure——139.6×10~5—17.2×10~5Pa, the salinity——0.06%o—2.33% (NaCl wt.), pH——7.37—9.16, main compositions in ore-forming fluid——Ca^(2+), Na^+, HCO_3^-, the uranium concentration——0.0002—0.0027mol/L. During ore-stage the temperature of orc-forming fluid is 268—145℃, the pressure——3.9×10~5—3.19×10~5Pa, the salinity——0.06%—11.68%(NaCl wt. )pH——6.60—7.61, main compositions in ore-forming fluid——Ca^(2+), HCO_3^-, F-, SO_4^(2-). The uranium concentration——0.0017—0.0152mol/L. During post-ore stage the temperature of ore-forming fluid is 165—100℃, the pressure——5.7×10~5—1.1×10~5Pa, the salinity——0.06%—6.01%(NaCl wt.), pH——5.28—8.03, main compositions in ore-forming fluid——Ca^(2+), HCO_3^-, SO_4^(2-), the uranium concentration——0.0009—0.0165mol/L. During pre-ore and ore-stage, ore-forming fluid was from the deep part of crust; during post-ore stage it was from the shallow part of crust.
出处
《铀矿地质》
CSCD
北大核心
1989年第2期78-85,共8页
Uranium Geology
