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康塔克特湖脉金矿床位于特朗-哈得孙造山带元古代拉龙日区域萨斯喀彻温北部。矿床与一高角度逆向剪切带有关,该剪切带横切小迪尔湖复合侵入体中部的花岗岩和花岗闪长岩相。根据矿物学、结构和穿切关系在剪切带内已鉴别出四次成脉作用。Ⅰ阶段脉由长石,石英土黑云母组成,不含金;Ⅱ阶段脉为石英-黑云母脉,具有窄的黑云母-绿帘石蚀变带,也不含金;Ⅲ阶段脉由石英、白云母、黄铁矿土金组成,具有窄的白云母-黄铁矿蚀变带,叠加于Ⅱ阶段蚀变带之上;Ⅳ阶段脉为石英-白云母-黄铜矿-闪锌矿-金-方铅矿土钠长石土方解石土绿泥石土磁黄铁矿土黄铁矿土辉铋矿土自然锁脉,产于宽<1cm、长1～15cm的微裂隙中,穿切所有其他阶段的脉。 氧同位素研究表明,无矿脉体(Ⅰ、Ⅱ阶段)形成温度近450℃,石英δ~(18)O值为10.5～10.9‰;含金脉(Ⅲ、Ⅳ阶段)形成温度为270～360℃,石英δ~(18)O值为11.8～13.5‰。脉石英内捕获的大多数流体包裹体是次生成因的,Ⅰ、Ⅱ、Ⅲ阶段脉沉淀过程中捕获的原生流体包裹体未保留下来。然而,与金共生的闪锌矿中的原生流体包裹体和Ⅲ阶段石英中类似的次生包裹体说明,与Ⅳ阶段脉有关的流体盐度为2.5～6.3wt％NaCl eq,CO_2含量较低(液体CO_2不可见),均一温度为225～300℃,连同氧同位素平衡温度一起,指出含金?
The Kantat Lake gold deposit is located in the northern part of Saskatchewan in the Paleo-Hudson orogen Paleozoic. The deposit is associated with a high-angle reverse shear zone that transverses the granite and granodiorite facies in the middle of the Little Deer Lake complex encroachment. According to mineralogical, structural and percutangent relationships have been identified in the shear zone four times into the pulse role. Stage I veins are composed of feldspar and quartzite biotite and do not contain gold. Stage II veins are quartz-biotite veins with narrow biotite-epidithic alteration zones and are free of gold. Stage III veins consist of quartz , Muscovite, and pyrite, with a narrow muscovite-pyrite alteration zone superimposed on the Ⅱ-stage alteration zone. The IV stage vein is quartz-muscovite-chalcopyrite-sphalerite - Gold - Galena soil albite soil calcite earth chlorite magnetite pyrite soil pyrite soil bismuthinite natural lock, produced in wide <1cm, 1 ~ 15cm long micro-cracks, cut through All other stages of the pulse. Oxygen isotope studies show that the formation temperature of the oreless veins (stage Ⅰ and Ⅱ) is nearly 450 ℃ and the δ 18 O value of quartz is 10.5 ~ 10.9 ‰. The formation temperature of gold veins (stages Ⅲ and Ⅳ) is 270 ~ 360 ℃ , And the δ ~ (18) O value of quartz is 11.8 ~ 13.5 ‰. Most of the fluid inclusions trapped in vein quartz are secondary causes, and the primary fluid inclusions trapped during the pulse sedimentation in stages I, II, and III are not retained. However, the primary inclusions in the raw fluid inclusions of sphalerite associated with gold and similar secondary inclusions in stage III quartz indicate that the fluid salinity associated with stage IV veins is 2.5 to 6.3 wt% NaCl eq with a lower CO 2 content (Liquid CO 2 is not visible) with a homogenization temperature of 225-300 ° C, along with the oxygen isotope equilibrium temperature, indicating gold content?