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小柳沟铜钨多金属矿床赋存于长城系朱龙关群下岩组上岩段及上岩组中、下岩段中 ,容矿岩石为碳酸盐岩及火山岩。该矿床是以W为主 ,共生有Cu,Mo,Bi,伴生有Cu ,Mo,Bi,Be,V ,Sn ,Au,Ag的大型多金属矿床。根据成矿流体的盐度、密度、成矿压力、pH、Eh值及硫、氧、铅同位素研究表明 ,成矿溶液为大气地表水与地层中的建造水或重熔花岗岩岩浆水的混合流体。推测该矿床可能为火山喷发沉积—岩浆期后热液叠加改造型矿床 ,朱龙关群下岩组上岩段及上岩组中、下岩段可能是其矿源层
The Xiaoliuougou Cu-W polymetallic deposit is hosted in the upper and lower rocks of the Upper Member of the Lower Member of the Zhulongguan Group in the Great Wall and carbonate rocks and volcanic rocks. The deposit is mainly composed of W, with symbiotic Cu, Mo, Bi and large polymetallic deposits associated with Cu, Mo, Bi, Be, V, Sn, Au and Ag. According to the study of salinity, density, metallogenetic pressure, pH, Eh, and sulfur, oxygen and lead isotopes of ore-forming fluid, it shows that the ore-forming solution is a mixed fluid of atmospheric surface water and groundwater or remelted granite magmatic water . It is speculated that the deposit may be a volcanic eruption-magmatic post-magmatic superimposition remodeling deposit, and that the upper and lower rocks of the Lower Jurassic Group and the Lower Jurassic of Zhulonguan Group may be the source rocks