福建宁化松岭锡矿地质特征及成矿模式探讨

Geological Characteristics and Metallogenic Model Discussion of Songling Tin deposit in Ninghua County Fujian Province

福建宁化松岭锡矿位于武夷山多金属矿成矿带的中段,具典型的斑岩型锡矿的地质特征,是早白垩世构造-岩浆活动的产物。通过地质调查和岩石学、地球化学等特征分析,认为锡矿是新元古代和早泥盆世大规模地壳内物质分异产生的富含锡元素的深部地壳"残余相",在早白垩世活化形成的富含锡矿质岩浆热液,迁移至浅部形成的矿床。宁化松岭锡矿的成矿地质体为花岗斑岩,并对其成矿要素和成矿模式进行分析探讨。

Songling tin deposit in Ninghua county locates in the Middle part of polymetallic mineralization belt of Wuyi mountain.It has the typical geological characteristic porphyry tin deposit and is the product of the tectonic-magmatic activity in the Early Cretaceous.By the work of geological investigation,petrology and geochemistry,it is considered that the tin deposit is formed from the rich tin mineral magmatic hydrothermal fluid migration to shallow part which is activated formed in Early Cretaceous from the rich tin element deep part"residual crust"of large scale differentiate production in the crust in Neoproterozoic and Early Devonian.