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本文讨论了华南与花岗岩类有关的某些金属成矿岩石化学专属性及某些成岩与成矿的地球化学问题。与挥发分水、氟及锂有关的各种络合物形式反映了K、Na、F、H_2O、Li等与多种稀有锡钨金属元素矿化有紧密的成因联系。两性元素铝在岩浆演化和分异过程中的地球化学行为,亦受到挥发分含量的影响,因而产生配位形式的改变。后者在一定程度上又影响了矿化元素分散和富集。从铝的饱和度的角度可以将花岗岩浆区分为A型和B型,二者在岩石化学特征或矿化元素组合上都存在明显差异。花岗岩类及其有关矿化存在一定的区域性差异,和上述地球化学过程有关。根据这些地球化学原理,我们可以提出某些区域性的找矿远景预测。
This paper discusses the chemical peculiarities of some metallogenic rocks associated with granitoids in South China and some of the geochemical problems of diagenesis and mineralization. The forms of complexes with volatile water, fluorine and lithium reflect that K, Na, F, H_2O, Li, etc. are closely related to the mineralization of many rare tin-tungsten metal elements. The geochemical behavior of the amphoteric elemental aluminum during magmatic evolution and differentiation is also affected by the volatile content, resulting in a change in coordination form. The latter, to a certain extent, also affected the mineralization elements dispersed and enriched. Granite magma can be divided into A-type and B-type from the perspective of aluminum saturation. Both of them have obvious differences in petrochemical characteristics or mineralization element combinations. There are some regional differences between granitoids and their related mineralization, which are related to the above geochemical processes. Based on these geochemical principles, we can propose some regional prospecting prospect predictions.