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总结了穆隆套矿床的地质构造、岩石学和旷物学资料,提出了能解释其金矿化发育范围大、金的成色高的成因观点。矿床产于通过内生作用富集碳和金的陆源岩石建造中,形成于流体-岩浆交代陆源岩石的过程中,此过程伴有金的富集及其淋滤净化。金矿石以花岗质和花岗正长质煌斑岩所固有的矿物共生组合(黑云母+斜长石+石英+正长石)和成分为特征。伴随着煌斑岩的侵入,陆源围岩层发生了碳质交代作用、黑云母化、进化变质作用和分散状矿化。岩石与矿石的这些原始关系被其以后的重结晶作用、石英脉的贯入和退化变质作用掩盖了。
The geological structure, petrology and excavated data of Muluotao deposit are summarized, and the origin of the gold mineralization is explained. Ore deposits originate from the terrestrial rock that has been enriched in carbon and gold by endogenesis and formed during fluid-magmatic metasomatism of terrigenous rocks associated with enrichment of gold and its leaching and purification. The gold ore is characterized by the mineral assemblages (biotite + plagioclase + quartz + orthoclase) and composition inherent to granitoid and granodiorite plagioclase porphyry. Accompanying with the invasion of lamprophyre, carbonaceous metasomatism, biotitization, evolution metamorphism and disperse mineralization occur in Luyuanweijing strata. These primitive relationships between rock and ore are obscured by their subsequent recrystallization, penetration of quartz veins and degenerative metamorphism.