摘要
依据层状膏盐矿——菱锌铁矿-石膏矿的产态、分布、矿石成分、矿物及组构演化等特征,对其成因及地质意义进行了初步探讨,认为属与海底火山喷气活动有关的热卤水沉积物,且遭受了后期地质作用的破坏与改造。本研究使锡铁山铅锌矿床的垂向分带更趋完善,并有助于在地质条件相似地区寻找层状碳酸盐型锌矿床及与其紧密伴生的多金属硫化物矿床。
A kind of bedded gypsum-salts ore body——iron zinc spar and gypsum ore is introduced in this paper. It appears in Xitieshan Pb-Zn deposit in Qinghai Province and is associated with those bedded ore bodies of multiple metallic sulfides formed volcanic exhalative deposition on the sea bottom. Based on the character of its distribution, occurence, ore composition, mineralogy and fabric evolution etc., its origin and geological significance have been discussed primarily. The author has recongnized that it belongs to a kind of hot brine deposit generated from the volcanic exhalative on the sea bottom and had been damaged and transformed by late geological function. The study will further perfect the vertical beltting of the ore deposit very well and will help to search for the bedded carbon Zn and multiple metallic sulfide deposits associated with this deposit in the area of similar geological condition
