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研究表明:不同成岩成矿作用不但与温度、压力有关,而且微量气体成分及其含量也有明显的规律变化.例如某爆发岩筒中,酸性气体(HCl、HF、H_2S)含量一般高于不活泼气体(N_2等);随着温度的下降,酸性气体含量减少,而后者增加.在某些地区远离花岗岩体矿物包裹体中CO_2含量有规律地增加,对矿物包裹体中微量气体成分及其含量的研究,有助于解决成岩作用机制,成矿阶段划分及矿床成因.同时,对地球化学找矿,隐伏矿体的揭露也有指导意义.包裹体中微量气体的变化可以作为一个地球化学指示剂.我们在自行研制真空爆裂微量气体测量分析仪的基础上,1979年春,首次成功地使用带热解炉的色谱仪测定了矿物包裹体中H_2O和CO_2等微量气体组分.同时对该色谱仪进行了改装,使该仪器更适合于矿物包裹体微量组分的测定及研究.通过近400多个
The results show that: the different diagenesis and mineralization are not only related to temperature and pressure, but also have obvious regular changes of micro gas composition and content.For example, the content of acid gas (HCl, HF, H 2 S) is generally higher than that of inert gas (N 2, etc.). With the decrease of temperature, the content of acid gas decreases, while the latter increases.In some areas, the content of CO 2 in mineral inclusions far away from granite increases regularly, and the contents of trace gases and their contents in mineral inclusions It is helpful to reveal the mechanism of diagenesis, the division of metallogenic stages and the genesis of ore deposits.It is also instructive to reveal the geochemical prospecting and concealed orebodies.The variation of trace gases in inclusions can be used as a geochemical indicator. Based on the self-developed vacuum burst micro-gas measurement and analysis instrument, we successfully measured the trace gas components such as H 2 O and CO 2 in the mineral inclusions by using the chromatograph with pyrolysis furnace for the first time in the spring of 1979. At the same time, Modified, so that the instrument is more suitable for the determination and study of trace inclusions in mineral inclusions. Through nearly 400