南岭中段锡矿主要类型及找矿方向

南岭中段锡矿床的成因类型主要有五种:蚀变花岗岩型、斑岩型、云英岩型、热液充填型、热液交代型和接触交代型.成矿作用主要发生于燕山期,与同期花岗岩浆的侵位密切相关,矿化主要集中于成矿花岗岩体的内外接触带.其中,骑田岭、九嶷山、姑婆山、都庞岭等巨型复式花岗岩基分布区具良好的找矿前景.

MAIN TYPES AND PROGNOSIS OF TIN DEPOSITS IN CENTRAL NANLING REGION

Tin deposits in central Nanling region are mainly altered type, porphyry type, greisentype, hydrothermal vein type, hydrothermal metasomatic type and contact metasomatic type. Mineralization happened usually during Yanshanian Period and might be closely related to granitic magmatism of the same period and concentratedly locate in the contact zones of granitoids with wallrocks. Study shows that the central Nanling region .is of great prospecting potential of tin resources, especially in the outcropped area of the Qitianling,Jiunishan, Guposhan and Dupengling composite granitic batholith.