CAJ | 학술논문

块状特富矿是深部熔离贯入型矿石的典型代表。通过地质模型来直观了解金川铜镍硫化物矿床中块状特富矿的空间分布：平面上分布于Ⅱ矿区33～41行之间，垂直方向上分布于1150～1500 m标高范围内；根据其与Ⅱ矿区Ⅱ-②矿体的超基性岩的空间关系，将块状特富矿划分为岩体内部型和岩体边部型。通过对块状特富矿及其附近细脉浸染状矿的矿物成分测试，结果表明：块状矿石由98％以上的金属硫化物组成，金属矿物主要为磁黄铁矿、黄铁矿、黄铜矿、镍黄铁矿，其中，镍黄铁矿较发育，没有方黄铜矿；矿石中的磁黄铁矿均为单斜晶系，说明特富矿晶出温度很低，为100℃～320℃。首次对金川各类矿石中长石或石英进行液体包裹体测试，结果证明其成矿期晚于其他深部熔离贯入型岩浆矿体。通过对成矿物质来源、成矿期次、控矿因素、成矿标志等的研究，指出块状特富矿分布受构造控制，与细脉浸染状矿石、含矿化辉绿岩脉密切相关，并认为 NE向平推断层发育、且有细脉浸染状矿石或含矿化辉绿岩脉产出的部位是寻找块状特富矿的重点区域。
괴상특부광시심부용리관입형광석적전형대표。통과지질모형래직관료해금천동얼류화물광상중괴상특부광적공간분포：평면상분포우Ⅱ광구33～41행지간，수직방향상분포우1150～1500 m표고범위내；근거기여Ⅱ광구Ⅱ-②광체적초기성암적공간관계，장괴상특부광화분위암체내부형화암체변부형。통과대괴상특부광급기부근세맥침염상광적광물성분측시，결과표명：괴상광석유98％이상적금속류화물조성，금속광물주요위자황철광、황철광、황동광、얼황철광，기중，얼황철광교발육，몰유방황동광；광석중적자황철광균위단사정계，설명특부광정출온도흔저，위100℃～320℃。수차대금천각류광석중장석혹석영진행액체포과체측시，결과증명기성광기만우기타심부용리관입형암장광체。통과대성광물질래원、성광기차、공광인소、성광표지등적연구，지출괴상특부광분포수구조공제，여세맥침염상광석、함광화휘록암맥밀절상관，병인위 NE향평추단층발육、차유세맥침염상광석혹함광화휘록암맥산출적부위시심조괴상특부광적중점구역。
Massive rich ore is typical of deep liquation-injection.Based on the geological model, the spatial distribution of massive rich ore in Jinchuan Cu-Ni sulfide deposit is that the ore occurs lines 33-41 of mining areaⅡ in the plane and elevation of 1 150-1 500 m in the vertical.According to the spatial relation of the ore to the ultrabasic rock ofⅡ-② orebody in mining areaⅡ,massive rich ore is divided into the internal type and the type of rock's edge.According to the test results of mineral composition from massive rich ore and nearby veinlet disseminated ores,the massive ore is made up of more than 98% metal sulfides,which mainly include pyrrhotite,pyrite, chalcopyrite and pentlandite.Pentlandite develops,and there is no cubanite in the massive ore. Pyrrhotites in the ores are monoclinic,so that the crystallized temperature of massive rich ore is very low with the range of 100 ℃-320 ℃.The first test on fluid inclusions of feldspar or quartz from Jinchuan deposit shows that the metallogenic stage of massive rich ore is later than that of other deep liquation injection magmatic orebodies.Based on the study on the source of ore-forming materials,metallogenic periods,ore-controlling factors and mineralization mark,the distribution of massive rich ore is controlled by structure,and is closely related to veinlet disseminated ores and mineralized diabase dikes.In general,the key regions for prospecting massive rich ore have the characteristics of developing NE-trending blatt flaws and the outputs of veinlet disseminated ores or mineralized diabase dikes.