通过对新疆阿尔泰山南缘原划为侵入的花岗岩基进行深入的,从宏观到微观的观察、研究后认为应属于 S 型花岗岩.根据岩石包裹体测试结果,求得成岩压力大于101×10~8 pa,温度大于416℃.结合地质特征,属于沿区域上大的复式背斜轴部分布...通过对新疆阿尔泰山南缘原划为侵入的花岗岩基进行深入的,从宏观到微观的观察、研究后认为应属于 S 型花岗岩.根据岩石包裹体测试结果,求得成岩压力大于101×10~8 pa,温度大于416℃.结合地质特征,属于沿区域上大的复式背斜轴部分布的重熔型半原地混合花岗岩.展开更多
The Yunlong tin deposit is controlled by a NNW tectonic zone. The primary ore bodios occur mainly in migmatized granites, occasionally in their external contact zones.The extending direction of tin ore bodies is appro...The Yunlong tin deposit is controlled by a NNW tectonic zone. The primary ore bodios occur mainly in migmatized granites, occasionally in their external contact zones.The extending direction of tin ore bodies is approximately consistent with that of the regional tectonic line. Ore bodies in the three tin ore belts of the studied region fall into three typos: cassiterite-quartz tourmaline veins, cassiterite-quartz veinlets and cassiterite-quartz sulfide veins. The mineral compositions of the ore bodies are rather simple. The principal minerals are quartz, elbaite, schori, dravite, cassiterite,pyrrotite, pyrite and arsenopyrite.Wail-rock alteration is oharaeterized by silicification, tourmalinization, chloritization,etc. Tin ore veins are rich in boron and fluorine as mineralizing elements. The Yunlong deposit is a hypothermul tin deposit associated with migmatization,and ira metallogenetic epoch is Himalayan.展开更多
文摘The Yunlong tin deposit is controlled by a NNW tectonic zone. The primary ore bodios occur mainly in migmatized granites, occasionally in their external contact zones.The extending direction of tin ore bodies is approximately consistent with that of the regional tectonic line. Ore bodies in the three tin ore belts of the studied region fall into three typos: cassiterite-quartz tourmaline veins, cassiterite-quartz veinlets and cassiterite-quartz sulfide veins. The mineral compositions of the ore bodies are rather simple. The principal minerals are quartz, elbaite, schori, dravite, cassiterite,pyrrotite, pyrite and arsenopyrite.Wail-rock alteration is oharaeterized by silicification, tourmalinization, chloritization,etc. Tin ore veins are rich in boron and fluorine as mineralizing elements. The Yunlong deposit is a hypothermul tin deposit associated with migmatization,and ira metallogenetic epoch is Himalayan.