CAJ | 학술논문

采用显微镜和扫描电子显微镜研究了山东省焦家金矿的金赋存状态.研究发现,该矿石中载金矿物有黄铁矿、黄铜矿、脉石矿物、闪锌矿和方铅矿.在硫化矿中金粒占77.12％,脉石中金粒占22.88％.金的赋存状态有裂隙金、包裹金和晶隙金,裂隙金占60.28％,包裹金占21.63％,晶隙金占18.09％.金矿物的形态主要有球状、三角形、矩形、条状和不规则形状.焦家金矿石中金矿物的粒度范围较大,大的颗粒达到100 μm,小的金颗粒只有3-5 μm,其中大于0.104 mm粒级的金颗粒占1.50％,0.074～0.104 mm粒级的金颗粒占5.26％,0.043～0.074 mm粒级的金颗粒占23.31％,0.037～0.043 mm粒级的金颗粒占3.76％,小于0.037 mm的金颗粒占64.29％.焦家金矿石中金矿物有自然金、银金矿、自然银、含铁自然银、金铜矿和螺硫银矿.其中,银金矿是最重要的金矿物,占71.56％.金银矿物平均成色为641.24‰.
채용현미경화소묘전자현미경연구료산동성초가금광적금부존상태.연구발현,해광석중재금광물유황철광、황동광、맥석광물、섬자광화방연광.재류화광중금립점77.12％,맥석중금립점22.88％.금적부존상태유렬극금、포과금화정극금,렬극금점60.28％,포과금점21.63％,정극금점18.09％.금광물적형태주요유구상、삼각형、구형、조상화불규칙형상.초가금광석중금광물적립도범위교대,대적과립체도100 μm,소적금과립지유3-5 μm,기중대우0.104 mm립급적금과립점1.50％,0.074～0.104 mm립급적금과립점5.26％,0.043～0.074 mm립급적금과립점23.31％,0.037～0.043 mm립급적금과립점3.76％,소우0.037 mm적금과립점64.29％.초가금광석중금광물유자연금、은금광、자연은、함철자연은、금동광화라류은광.기중,은금광시최중요적금광물,점71.56％.금은광물평균성색위641.24‰.
The microscopy and scanning electronic microscopy(SEM)were used to study the gold occurrence of Jiaojia gold mine,Shandong province.The results show that the gold-bearing minerals are composed of pyrite,chalcopyrite,gangue,sphalerite and galena.77.12％ of gold minerals are the sulphides and 22.88％ are the gangues.The gold occurrence is composed of 60.28％ fissure gold,21.63％ inclusion gold and 18.09％ crystal fractured gold.The morphology of gold mineral is composed of sphere,triangle,rectangle,strip and erose.The Jiaojia gold mineral owns large grain size range from 3-5 μm to 100 μm.1.5％ of gold grains is more than 0.104 mm,5.26％ is 0.074-0.104 mm,23.31％ is 0.043-0.074 mm,3.76％ is 0.043-0.037 mm and 64.29％ is less than 0.037 mm.The occurrence of gold mineral is composed of native gold,electrum,native silver,iron-bearing native silver,goldcuprid and acanthite.Electrum is the most important mineral,accounting for 71.56％.The average quality is 641.26‰ for gold and silver mineral.