摘要
学孔—落炉地区硫铁矿赋存于上二叠统龙潭组底部,按含矿组合岩性可分为粘土岩型硫铁矿和炭质页岩型硫铁矿,粘土岩型硫铁矿分布稳定,常受下伏茅口组岩溶起伏面的控制,炭质页岩型硫铁矿厚度变化较大,多呈似层状、透镜状产出。其成矿机理是在静滞缺氧水体环境中富有机质分解产生的硫化物与沉积碎屑物中的铁离子化合形成,矿床成因类型属滨海封闭湖沼沉积型硫铁矿。
Pyrite in Xuekong - Luolu area occurs in the bottom of Longtan formation of Upper Permian, for the ore - beating assemble lithology it can be divided in to clay pyrite and carbonaceous shale type pyrite, clay pyrite distributes stably and is controlled by lower Maokou formation karst wavy plane, the thickness of carbo- naceous shale type pyrite changes a lot and occurs as like -layered and Lentoid. Its mineralization mechanism is formed by sulfide of rich organic in perched oxygen deficient water and Iron ions in sedimentary clastics, the deposit genesis is beach closed lake sedimentary pyrite.
出处
《贵州地质》
2013年第2期114-118,共5页
Guizhou Geology
关键词
硫铁矿
粘土岩型
炭质页岩型矿
地质特征
成矿机理
贵州
clay pyrite
carbonaceous shale type pyrite
geologic character
mineralization mechanism
Guizhou
