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6 黄垢矿区矿石显微组构 (a)裂隙中含黄铁矿石英脉;(b)蚀变砂岩,其裂隙中以脉状产出硫化物,基质中也含硫化物;(c)含硫化物团块砂质板岩;(d)PyH-1为呈脉状产出在石英脉裂隙中的他形—半自形黄铁矿;(e)PyH-2产在蚀变砂岩裂隙中,呈半自形中粗粒或他形—半自形细粒;(f)PyH-3为产于蚀变砂岩中自形的具五角十二面体外形黄铁矿;(g)金红石交代半自形黄铁矿,金红石晚于黄铁矿生成;(h)PyH-4为自形立方体外形的黄铁矿,具环带结构,核部裂隙凹坑多,向边部变纯净,PyH-5为前者周围他形—半自形较细粒黄铁矿;(i)毒砂被拉长呈拔丝状,与黄铁矿共生,并交代黄铁矿;(j)毒砂交代黄铁矿,晚于黄铁矿生成;(k)针铁矿交代自形黄铁矿呈骸晶结构;(l)针铁矿交代自形黄铁矿呈假象结构;Apy-毒砂;Py-黄铁矿;Rt-金红石;Gt-针铁矿 |
Fig.6 Ore micro-fabric in Huanggou deposit |