(1. 中南大學(xué) 有色金屬成礦預(yù)測教育部重點(diǎn)實(shí)驗(yàn)室，長沙 410083;
2. 中南大學(xué) 地球科學(xué)與信息物理學(xué)院，長沙 410083)
摘 要: 為了解膠東金翅嶺金礦成礦流體特征，開展流體包裹體研究。結(jié)果表明：礦石石英中主要發(fā)育H2O-CO2包裹體、富CO2包裹體和H2O溶液包裹體3種類型，成礦流體均一溫度、鹽度及密度分別為120~362 ℃，3.2%~9.0%，0.34~0.94 g/m3，為中低溫、低鹽度及低密度流體；包裹體液相成分陽離子以K+、Na+、Ca2+和Mg2+為主，陰離子以SO42−、Cl−和F−為主；氣相成分以H2O、CO2和CH4為主。結(jié)合礦區(qū)前人研究，認(rèn)為該成礦流體是多源流體混合并經(jīng)歷水巖反應(yīng)演變而成。
關(guān)鍵字: 成礦流體；包裹體；金礦床；金翅嶺
Jinchiling gold deposit in Jiaodong
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China）
Abstract:To clarify the characteristics of ore-forming fluid of the Jinchiling gold deposit, fluid inclusion study was carried out. The results show that the inclusions consist of three types: H2O-CO2, CO2 and H2O inclusions. The compositions of cation and anion ions in liquid and gas of the inclusions are mainly respectively Na+, K+, Ca2+, Mg2+; SO42−, Cl−, F−; H2O, CO2 and CH4. The homogenization temperature, salinity and density of the fluid inclusions for the mineralization change from 120 ℃ to 362 ℃, 3.2% to 9.0% and 0.34 g/m3 to 0.94 g/m3, respectively, which show that these inclusions belong to middle-low temperature, low salinity and low density fluid. Combined with analyses of other researches, it is found that the ore-forming fluid following water-rock reaction is the mixture of multi-source fluid during its evolution.
Key words: ore-forming fluid; fluid inclusion; gold deposit; Jinchiling
