论文部分内容阅读
我国东部许多大型优质膨润土—沸石—珍珠岩矿床与酸性岩流在空间和成因上密切有关。一般在良好的富水冷却条件下,薄层岩流通常整体固结为玻璃质岩石。如果岩流厚度较大,则由于运移机制和定位冷凝环境不同,各部位在岩石学和岩石地球化学特征上存在着较大差别,往往在垂直方向和水平方向上显示出明显的分带现象。正是这种分带性,严格控制了矿体的赋存部位、形态、规模及矿石质量。本文主要以浙江缙云老虎头、江西广丰李家矿区为例,详细阐述酸性岩流的冷凝分带模式及其找矿意义。
Many large-scale high-quality bentonite-zeolite-perlite deposits in eastern part of China are closely related to the spatial and genesis of acid rock flow. Generally, under well-water-rich cooling conditions, thin-layer rock flow is generally consolidated into vitreous rocks. If the thickness of the rock flow is large, there are great differences in petrology and petrogeochemistry between each part because of the different migration mechanism and the location of condensation and condensation, and tend to show obvious zonation in the vertical and horizontal directions . It is this zonation, strict control of the occurrence of ore bodies, shape, size and ore quality. In this paper, we mainly take the tiger head of Jinyun in Zhejiang Province and the Lijia mining area in Guangfeng of Jiangxi as an example to elaborate the condensation zonation pattern of acid rock flow and its prospecting significance.