摘要
烂泥沟金矿的成矿物质主要来源于围岩地层，围岩地层经受了强烈的断裂变形作用，而金矿体的分布则严格受控于断裂构造。构造地球化学实验模拟了构造对金成矿的控制作用，结果表明构造作用中金，铁等成矿物质发生了明显的迁移，而铁的迁移距离大于金的迁移距离；其迁移的通道可能（主要）为粒间流体，其次为动力作用中产生的裂隙；迁移的方式可能（主要）以Ａｕ－Ｓｉ－Ｆｅ的络合物形式，其次有机械的形式；构造作用同时也提供了成矿物质聚集的空间，且动力作用强度越大，产生的裂隙越多，聚集的规模也越大。
The distribution of the gold orebodies at Lannigou gold deposit in Southwestern Guizhou is extractly controlled by a series of faulting structures resulted from strong deformation of sediment-host rocks.Maybe most of the ore-forming compositions were extracted out during faulting and deforming process of these host rocks.In the paped,the authors tried to illustrate such a mechanism of gold mineralization by application of structual-geochemistry to experimental stimulation of this process.The trial study of structural controls on gold ore formation suggests that the structures provided not only space for location of gold orebodies and conduits for ore-forming fluids with the forms of fractures of intergiain's open space, but also a thermodynamic system for mobilization of the associated elements in the surrounding strata and migration of ore forming elements,most as a complex An-Si-Fe in which iron's migration is remarkably farther than gold's,less in mechanic manner. In conclusion, the more intensely host rocks underwent faulting and deforming, the larger gold orebodies in size there were possibly.
出处
《贵州地质》
1995年第1期42-47,共6页
Guizhou Geology
