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从初步收集、整理的有关资料看,陕甘宁青四省(区)铬尖晶石类矿物,在化学成分上,受超基性岩不同的岩浆系列所控制,而不同的岩浆系列,多在一定的地质构造单元内呈有规律的分布。因此,对铬尖晶石化学成分特征的研究,不仅具有矿物学上的意义,而且具有一定的找矿意义。但必须指出,铬尖晶石单矿物样品的取得和化学分析是比较复杂的,所
According to the preliminary data collected and collated, the chromium spinel minerals in the four provinces (regions) of Shaanxi, Gansu, Ningxia and Qinghai provinces are controlled by different magmatic series of ultrabasic rocks in terms of chemical composition, and different magmatic series In a certain geological structure of the unit showed a regular distribution. Therefore, the study of the chemical composition of chromium spinel not only has the mineralogical significance, but also has some prospecting significance. However, it must be pointed out that the acquisition and analysis of chromium spinel single mineral samples is more complicated