摘要
研究表明,行洛坑钨矿含矿岩体是壳源花岗岩浆演化的产物。主成矿阶段热液与钨来自岩浆;成矿晚期硫化物-碳酸盐脉热液主要为大气降水,部分钨来自围岩。该矿床是集浸染型-网脉型白钨矿和石英大脉型黑钨矿为一体的大型钨矿床。
The Xingluokeng W deposit is located in northwestern Fujian.The ore-bearing rockbodyconsists of medium-coarse biotite granite and medium-fine two-mica granite with a Rb-Sr iso-chron age of 137±3 Ma.On the basis of REE and O,Sr isotopic studies,the authors consi-der that this W deposit has a crustal source with respect to its rock-and ore-forming materials.Multi-stage mineralization may be a reasonable mechanism of its formation.It resultedfrom the combination of disseminatednetwork scheelite,large quartz vein wolframite and sulfide-carbonate mineralizations.The H and O isotopic compositions of fluid from quartz fluid inc-lusions show that the ore-forming hydrothermal solution was derived from magmatic waterat the main mineralization stage.At the late stage meteoric water was largely involved.
出处
《地球化学》
CAS
CSCD
北大核心
1993年第2期187-196,共10页
Geochimica
