摘要
通过氢、氧、硫同位素测试和流体包裹体测温,结合三道湾子金矿床的地质、地球化学特征,探讨了三道湾子金矿矿床成因。研究表明三道湾子金矿为与中生代陆相火山岩有关的中—低温浅成热液矿床。矿石矿化类型为石英脉型。流体包裹体均一温度为15 0～2 76℃,盐度(Na Cleq)为2 .89%～5 .82 % ,平均4 .2 %。黄铁矿δ34 S值为- 3.1‰～+3.8‰,石英δ1 8O值为- 11.3‰～- 8.5‰,δDV- SMOW值为- 110‰～- 85‰。
The Sandaowanzi gold deposit, Heihe County, Heilongjiang Province, which occurs in Mesozoic continental volcanic rocks, is a moderate- and low-temperature hydrothermal shallow-seated deposit. Geochemical investigation reveals that the metallogenic media are solutions originating from mixing of volcanomagmatic water and atmospheric water. The measured temperature data of fluid inclusions show that the gold deposit is characterized by moderate and low temperature (150~276 ℃), low salinity (NaCl eq , 2 89%~5 82%) and shallow ore-forming depth (<1 km). Isotope analysis shows that the scattered δ 34 S values of pyrite range from -3.1‰ to +3.8‰, δ 18 O values of quartz from -14.3‰ to -8.7‰,and δD V-SMOW values of quartz from -110‰ to -85‰.
出处
《地质论评》
CAS
CSCD
北大核心
2005年第3期264-267,共4页
Geological Review
基金
中国地质调查资助项目 (编号 19992 0 190 116)
吉林大学创新基金资助项目的成果
