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一定类型和一定成分的火成岩与一定类型矿床的成因联系——成矿专属性的问题,是矿床学的基本问题之一。五十年代,闻广等曾首先提出成矿专属性这个术语,并指出火成岩的酸度是确定其内生金属矿床成矿专属性的重要标志,这是具有一定意义的;它反映了地球化学总的演化规律,但是它还不能指示与火成岩有关的气化-热液成矿的可能性,以及成岩与成矿的内在联系。大量地质资料及分析数据表明,火成岩的碱度(a值或Na_2O、
The formation of a certain type and a certain composition of igneous rocks and certain types of deposit genesis - the issue of mineralization specificity is one of the basic problems of depositology. In the 1950s, Wen Guang et al. First proposed the term ore-forming exclusivity and pointed out that the acidity of igneous rocks is an important symbol for determining the ore-forming specificity of its endogenous metal deposits. This is of some significance; it reflects the fact that the total geochemical But it still can not indicate the possibility of igneous-hydrothermal mineralization associated with igneous rocks and the intrinsic relationship between diagenesis and mineralization. A large number of geological data and analysis of data show that the basicity of igneous rock (a value or Na_2O,