摘要
辽河群层控铅锌矿床包括沉积变质的层状矿床、沉积—强烈改造的脉状矿床和沉积—变质(改造)—岩浆热液迭加改造的不规则矿床。这些矿床经历了漫长的地质作用,构成矿石的主要矿物方铅矿、闪锌矿、石英等的晶体形态、物理性质、化学成分、微量元素、流体包体、同位素组成等标型特征和成因信息,揭示了成矿规律和各类矿床的空间分布特征,进而为在该区找矿提供了线索。
The stratabound Pb—Zn deposif of the Liaohe group is the largest type of Pb—Zn deposit in Liaoning Province, It includes the sedimento-metamorphic stratiform deposit, the sedimento-strongly transformed vein deposit and the sedimento-metamorphic (transtormed) -irregular deposit superimposed and transformed by magmatic hydrothermal solution. These deposits occur always in different palaeo-geographic environments and experienced long term geolo gical processes. The evolutional history of the minerals in these deposits acts not only as a natural record but also as an indicator of mineral deposit. In this paper, the author discusses the genesis of the deposits and reveals the regularity of metallogeny as well as the features of spatial distribution of all types of Pb—Zn deposit through the study of typomorphic characertistics and informations of genesis of crystal morphology, crystal structure, physical property, chemical composition, features of trace elements, micromorphology, fluid inclusions and features of isotope composition of the major minerals (galena, sphalerite and quartz) which constitute the Pb—Zn ores. The author suggests that prospecting mineralogy and other prospecting measurements should be developed emphatically in the lagoon area, the tidal flat area, the ancient seafloor volcanic eruption area and the area where the activitiesof deep fractures and magma are frequent in the late stage to search for different types of Pb—Zn deposit under the prerequisite for making clear the lithofacies palaeogeography and palaeo—tectonics.
出处
《吉林地质》
1990年第2期39-48,共10页
Jilin Geology
关键词
铅锌矿
层控
矿床
矿物
标型特征
Pb—Zn diposits Stratabound Tynomorphic Characteristics Significance of prospecting
