金动力迁移的构造地球化学实验研究

EXPERIMENTAL STUDY IN STRUCTURAL GEOCHEMISTRY OF GOLD DYNAMICAL MIGRATION

研究构造形变中金的动力迁移、富集的规律性的一种新的实验方法。实验结果在明氯化金在动力形变中发生还原作用形成了自然金，析出的金颗粒主要分布在形变产生的微裂隙中及造岩矿物周围；硅和铁在金的动力迁移中起了重要作用，在缺乏大规模流体活动的情况下，金的动力迁移与含硅、铁的粒间流体有关。

A new experimental method was used to study the regularity of dynamical migration and enrichment of gold during the tectonic deformation, Its results indicate that gold chloride was reduced to form natural gold,gold grains separated out mainly distribute in microcracks formed during the deformation and around the rock-forming minerals, that Fe and Si play a key rule in the dynamical migration of gold which has correlation with intergrainular fluids containing Fe and Si under the condition of lack of large scale fluids.