湖南通道地区金矿床中黄铁矿成分标型特征及对矿床成因的启示 |
高华,谢玉华,杨亮,张哲,柯新星,刘晓敏,罗建镖,刘琦,刘继顺,王智琳,孔华 |
Composition Typomorphic Characteristics of Pyrite and Its Genetic Implication for Gold Deposits in Tongdao County,Hunan Province |
Hua GAO,Yuhua XIE,Liang YANG,Zhe ZHANG,Xinxing KE,Xiaomin LIU,Jianbiao LUO,Qi LIU,Jishun LIU,Zhilin WANG,Hua KONG |
图5 金坑矿区矿石显微组构 (a)含硫化物团块石英脉;(b)硅化含砾砂岩中含硫化物团块;(c)黄铁矿(PyJ)被包裹在毒砂中,黄铁矿呈半自形—自形,右侧颗粒为五角十二面体;(d)半自形毒砂交代自形立方体外形黄铁矿;(e)毒砂、黄铁矿和黄铜矿共生,黄铁矿为自形五角十二面体,黄铜矿为他形粒状;(f)半自形闪锌矿交代黄铁矿,黄铁矿有五角十二面体和立方体,以五角十二面体外形为主;(g)闪锌矿呈脉状交代毒砂;(h)、(i)呈斑点状产出的自形黄铁矿被针铁矿完全交代,呈假象结构,黄铁矿呈五角十二面体和立方体外形;Apy-毒砂;Py-黄铁矿;Ccp-黄铜矿;Sp-闪锌矿;Gt-针铁矿 |
Fig.5 Ore micro-fabric in Jinkeng deposit |