中南大学学报（自然科学版）2011，Vol.42Issue(9)：2783-2789,7.
龙门山铜多金属矿床成矿地质条件和控矿因素及其成因分析
Geological ore-formation conditions, controlling factors and analysis of genesis of Longmenshan Cu-polymetallic deposit in Anhui Province
摘要
Abstract
The relationship between mineralization and strata, structure, magmatite rock of Longmenshan Cu-polymetallic deposite was researched based on the analysis of geological conditions.The ore-controlling factors and genesis of deposit were summarized. The results show that the strata concerned with mineralization are dolomitic limestone with thin layer of gypsum of middle Triassic Yueshan group (T2y) and limestone of lower Triassic Nanlinghu group (Tin); the ore-controlling structures are contact zone between Yueshan intrusion and wall rock, the Yueshan intrusion that hosts the mineralization originates from upper mantle in early Yanshanian is mid-acid calc-alkaline rock. The magma is the precondition for mineralization, brings a lot of metallogenic fluid, metallogenic material and enormous thermal energy. The structure provides the favorable passage and place for the emplacement of magma and migration and deposition of ore-forming fluid. The favorable lithologic character of strata also takes part in the mineralizationand the orebody shapes are mainly phacoidal and stratoid. The ore fabrics are metasomatic texture and massive structure,dense impregnation structure, the mineralizing process is contact metamorphism, and the wall-rock alteration is mainlyskarnization of garnet, diopside and marmarization. The formation of deposit has affinity with magmatic activity of earlyYanshanian, and the genesis of deposit in this area is skam copper-polymetallic deposit controlled by contactmetamorphism.关键词
成矿地质条件/控矿因素/矿床成因/龙门山铜多金属矿床Key words
geological conditions/ controlling factors/ genesis of deposit/ Longmenshan copper-polymetallic deposit分类
天文与地球科学引用本文复制引用
邹林,赵晓霞,刘忠法,张普斌,疏志明,郑明泓..龙门山铜多金属矿床成矿地质条件和控矿因素及其成因分析[J].中南大学学报（自然科学版）,2011,42(9):2783-2789,7.基金项目
国家重点基础研究发展计划(“973”计划)项目(2007CB411405) （“973”计划）
国家“十一五”科技支撑计划课题(2006BA01B07) （2006BA01B07）
国土资源部公益性行业专项经费项目04课题(200911007-04) （200911007-04）
国家危机办项目(20109901)基金联合资助 （20109901）
