摘要
四川盐源西范坪斑岩铜矿的成矿母岩为喜山期石英二长斑岩，Nd、Sr、Pb、O同位素资料证实，它属于同熔型，源岩可能为区内未出露的中元古代末期火成岩。矿床中石英流体包裹体具有高的均一温度，高的盐度，并含有少见的黄铜矿子晶。成矿热液的δ18O值为9．34‰～4．16‰，表明它们主要由岩浆水组成，有少量大气降水混入，Pb、S同位素研究表明，成矿组分主要来自岩浆，部分来自围岩。
The ore-forming parent rock of the Xifanping porphyry copper deposit,Yanyuan County,Sichuan Province is a Himalayan quartz-monzoporphyry. Nd, Sr, Pb and O isotope data suggest that it belongs to the syntexis type and its source rock is the terminal magmatic rock of MiddIe Proterozoic,which is of no exposure in this area. Quartz-containing fluid inclusions in the deposit have high homogenization temperatures and high salinities and contain rare daughter crystals of chalcopyrite.The δ18 O values of ore-forming solution are 9- 34‰-4. 16‰, indicating that they are composed mainly of magmatic water with minor meteoric water. Pb and S isotopic studies indicate that the ore-forming components were largely derived from the magma and partly form the country rocks.
出处
《矿物学报》
CAS
CSCD
北大核心
1997年第1期56-62,共7页
Acta Mineralogica Sinica
