CAJ | 학술논문

江治岭头矿床自20世纪中叶勘查开发黄铁矿起，陆续发现了黄铁矿、铅锌矿及金银矿等矿床。在近些年的地质勘察和深部探矿中，在治岭头矿区深部发现了斑岩型钼矿。钼矿体主要产于斑岩体外接触带八都群变质岩中，从矿体部位向外围发育典型的斑岩蚀变分带，从内向外依次是钾化黑云母化带-黄铁绢英岩化带-绿泥石碳酸盐化带。成矿流体分为成矿早期、主成矿期、成矿晚期3个阶段，成矿早期以Ⅰa型包裹体为代表，其均一温度为354~442℃，具有中等盐度，为12.3~19.4wt%NaCl；主成矿期发育Ⅱ型和III型包裹体，其中II型包裹体均一温度329~406℃，盐度为3.5~6.2 wt%NaCl，Ⅲ型包裹体均一温度为305~375℃，盐度为30.6~45.8 wt%NaCl；成矿晚期Ⅰb型包裹体，其均一温度为187~285℃，盐度为3.5~8.4 wt%NaCl。成矿期发生了强烈的流体沸腾作用，导致钼矿化。激光拉曼探针结果显示，治岭头钼矿三期石英中流体主要为H2O-NaCl流体。氢氧同位素，成矿流体由成矿前、成矿期的岩浆热液演化为成矿后的大气降水。
강치령두광상자20세기중협감사개발황철광기，륙속발현료황철광、연자광급금은광등광상。재근사년적지질감찰화심부탐광중，재치령두광구심부발현료반암형목광。목광체주요산우반암체외접촉대팔도군변질암중，종광체부위향외위발육전형적반암식변분대，종내향외의차시갑화흑운모화대-황철견영암화대-록니석탄산염화대。성광류체분위성광조기、주성광기、성광만기3개계단，성광조기이Ⅰa형포과체위대표，기균일온도위354~442℃，구유중등염도，위12.3~19.4wt%NaCl；주성광기발육Ⅱ형화III형포과체，기중II형포과체균일온도329~406℃，염도위3.5~6.2 wt%NaCl，Ⅲ형포과체균일온도위305~375℃，염도위30.6~45.8 wt%NaCl；성광만기Ⅰb형포과체，기균일온도위187~285℃，염도위3.5~8.4 wt%NaCl。성광기발생료강렬적류체비등작용，도치목광화。격광랍만탐침결과현시，치령두목광삼기석영중류체주요위H2O-NaCl류체。경양동위소，성광류체유성광전、성광기적암장열액연화위성광후적대기강수。
Since pyrite was found in the Zhilingtou deposit, Zhejiang Province in the mid-20th century, lead-zinc and gold-silver ore-bodies have been discovered as well. In recent years, a porphyry molybdenum deposit has been found beneath the gold-silver orebodies in Zhilingtou area. Molybdenum ore bodies mainly occur in the Badu Group in the outer contact zone of the granite porphyry. Similarly with the typical porphyry-type alteration zoning, the alteration types from molybdenum ore body to wall rock is from potassium-biotitization through beresitization to chloritization-carbonation. Ore fluids can be divided into early mineralization stage, the main mineralization stage, and the late mineralization stage. Fluid inclusions in the early mineralization stage are mainly Ia type ones with the homogenization temperatures from 354 to 442℃and salinities from 12.3 to 19.4 wt%NaCl. Fluid inclusions in the mineralization stage include typeⅡand III. The homogenization temperatures of typeⅡrange from 329 to 406℃and the salinities vary between 3.5 and 6.2 wt%NaCl;the homogenization temperatures of type III range from 305 to 375℃and the salinities vary between 30.6 and 45.8 wt%NaCl. Fluid inclusions in late mineralization stage belong to typeⅠb with the homogenization temperatures from 187 to 285℃and the salinities from 3.5 to 8.4 wt%NaCl. Fluid boiling processes played an important role in metal precipitation of the Zhilingtou molybdenum deposit. The Raman spectra show that ore fluids are H2O-NaCl fluids. The hydrogen-oxygen isotopes data show that mineralizing fluids were magmatic fluids during the early and main mineralization stages and meteoric water was added in the late stage.