CAJ | 학술논문

提内蒙古查干敖包钼矿是宝音图钼矿区矿床之一，为狼山北段发现的斑岩白云母石英脉型钼矿,成矿岩体主要为钾长花岗岩、细晶花岗岩和花岗斑岩,岩体锆石U-Pb平均年龄为(253.5±3.3) Ma。本次研究测得查干敖包辉钼矿的187Re-187Os等时线年龄为(239.2±5.8) Ma,与成矿岩体时代相差约13 Ma,反映钼矿床的形成经历了较长的成岩成矿演化历史。查干敖包钼矿床具有斑岩矿床特点,矿床产于成矿岩体内接触带,但是矿化形成于白云母石英脉中,主要与白云母热液矿物有关,因此是一种特殊的斑岩型钼矿床。
제내몽고사간오포목광시보음도목광구광상지일，위랑산북단발현적반암백운모석영맥형목광,성광암체주요위갑장화강암、세정화강암화화강반암,암체고석U-Pb평균년령위(253.5±3.3) Ma。본차연구측득사간오포휘목광적187Re-187Os등시선년령위(239.2±5.8) Ma,여성광암체시대상차약13 Ma,반영목광상적형성경력료교장적성암성광연화역사。사간오포목광상구유반암광상특점,광상산우성광암체내접촉대,단시광화형성우백운모석영맥중,주요여백운모열액광물유관,인차시일충특수적반암형목광상。
The Qagan Obao molybdenum deposit was discovered in the northern part of the Langshan Mountain. It is a porphyry muscovite quartz vein type deposit, and the ore-forming rock bodies are mainly K-feldspar granite, fine-grained granite and granite porphyry, with the zircon U-Pb mean age of(53.5 ± 3.3)Ma. Molybdenite 187Re-187Os isochron age of the Qagan Obao molybdenum deposit is(239.2 ± 5.8)Ma, with the rock-forming and ore-forming time difference being about 13 Ma, suggesting that the formation of the Qagan Obo molybdenum deposit experienced a long rock-forming and ore-forming evolution history. The Qagan Obo molybdenum deposit has the characteristics of the porphyry deposit, the ore deposit occurs in the inner contact zone with the country rock, but the mineralization took plade in muscovite quartz veins, mainly related to hydrothermal mineral muscovite. The deposit is therefore a special kind of porphyry molybdenum deposit.