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经详细研究九毛锡矿各类地质体的含锡量,确定了锡在火山-沉积变质岩及变超镁铁岩中的初始富集。根据不同变质程度岩石含锡量变化趋势、微量元素含量的继承性关系、成因矿物等方面的研究,确定锡矿床与超镁铁岩及火山-沉积岩间有成因联系。本文强调了锡的多重性及锡在超镁铁岩中的初始富集,指出变质作用是古陆区锡成矿的重要地质营力。
After a detailed study of tin content in various geologic bodies of Jiuliu tin deposit, the initial enrichment of tin in volcanic-sedimentary metamorphic rocks and variable ultramafic rocks was determined. According to the variation of tin content in different metamorphic rocks, the inheritance relationship of trace elements and the genetic minerals, it is confirmed that there is a genetic relationship between the tin deposits and ultramafite and volcano-sedimentary rocks. This paper emphasizes the multiplicity of tin and the initial enrichment of tin in ultramafic rocks. It is pointed out that the metamorphism is an important geological tectonic force of tin mineralization in the ancient land region.