多宝山斑岩铜矿矿化地球化学位守恒实验研究
来源期刊：中南大学学报(自然科学版)1987年第4期
论文作者：李佩兰 余行祯
文章页码：380 - 384
关键词：斑岩矿床； 铜矿床； 成矿条件； 地球化学； 化学势； 能量守恒； 地球化学堤； 氧化-还原电位； 控矿构造； 矿化作用； 模拟试验； 多宝山矿
Key words：prophyy deposit; copper deposit; conditions of ore formation; geochemistry; chemical potential; conversation of energy; geochemical barrier; oxidation-reduction potential; ore-controlling structure; mineralization; simulation test
摘 要：矿床的矿化作用过程,实质上是一种能量转换过程。它表现为成矿体系中各组分的地球化学位的转换,同时遵守地球化学位守恒。据此,笔者根据多宝山斑岩铜矿床地质特征及控矿条件分析,对其铜矿化的能量守恒进行实验研究与分析。实验结果表明,在多宝山特定的构造地球化学环境下,当成矿流体进入相对开放的构造裂隔中时,使成矿流体因动能而引起的地球化学位μK降低,因压力能而引起的地球化学位μp增大,这是建立地球化学还原障,产生硫化物矿化作用过程的原因所在。
Abstract: It is considered that the mineralization process is a form of energy exchange of ore component inore fluid system, and is in accordane with the principle of geochemical potential conservation. Thishas been testified through the experimental study based on Duobaoshan porpbyry copper deposit, itsgeological characteristics and its ore-controlling conditions. these results well illustrate the principleof geochemical potential conservation. Duobaoshan porphyry copper deposit was formed under specificstructural environment of crossed tectonic fissures which create open spaces for the mineralization.Suppose the geochemical potential μU induced by potential energy of ore fluid remains unchanged,the geochemical potential μK induced by kinetic energy of ore fluid decreases and the geochemical potential μP induced by pressure energy of ore fluid increases. Such effects became the origin of the concentration of copper sulphides in Duobaoshan porphyry copper deposit.
