Rare earth elements in modern and ancient hydrothermal sulphide minerals
The rare earth elements (REE) of various sulphides from modem hydrothermal fields of Mid-Atlantic Ridge have been examined, and related to their fluid composition. All sulphides demonstrate depletion of light REE (LREE) and strong negative Eu-anomaly when normalized to REE composition in hydrothermal fluid. Heavy REE (HREE) substitution into sulphide appears to be influenced with crystallographic control of sulphide lattice, while LREE content is governed with chloride complexation processes in fluid solution. REE patterns of hydrothermal sulphides have been compared to the REE in sulphide samples from the Uzelginsk ore deposit. REE distributions in ancient sulphides prove the hydrothermal origin of sulphide samples as well as reflect the alteration processes that took place during post-hydrothermal stages of ore genesis.
rare earths hydrothermal sulfides ore deposit
Maria N.Rimskaya-Korsakova
P.P.Shirshov Institute of Oceanology, Moscow, Russia
国际会议
第八届国际矿床地质会议(Proceedings of the Eighth Biennial SGA Meeting)
北京
英文
118-119
2005-08-18（万方平台首次上网日期，不代表论文的发表时间）