安徽铜陵鸡冠石银金矿床稀土元素地球化学特征  

THE REE GEOCHEMICAL CHARACTERISTICS OF THE JIGUANSHI GOLD AND SILVER - BEARING ORE DEPOSIT IN TONGLING, ANHUI

作　　者：王训诚[1] 吴多元[1] 周育才[1] 罗传华[1] 谢超国 

机构地区：[1]安徽省地质矿产局321地质队,安徽铜陵244033

出　　处：《安徽地质》2000年第1期51-57,共7页Geology of Anhui

摘　　要：鸡冠石银金矿床发育在岩体的内部，矿体呈直立的充填脉状。以含银金块状黄铁矿矿石为主，∑ ＲＥＥ＝１０９．２４８ Ｘ １０－６－４．１８ Ｘ １０－６，δＥｕ＝２．４０－０．９０，∑ＬＲＥＥ／∑ＨＲＥＥ＝１２．８１－８．４９。稀土元素球粒陨 石标准化组成模式为右斜型。成矿物质来源于２０－３０ｋｍ深度的中酸性岩浆熔离形成的超基性岩浆。The Jiguanshi silver and gold ore deposit was developed inside a rock body The ore body is vertically infilling vein - like and dominated by silver and gold - beating massive pyrite ores with REE = 109. 248 - 4. 18, Eu = 2. 40 - 0. 90. and LREE/ HREE = 12. 81 ~ 8. 94. The REE chondrite normalization model is in a right - dipping form. The melallogenic substance is sourced from the 20 ~ 30km deep ultrabasic magma resulted from the dissolving and separation of the intermediate - acid magma.

关 键 词：稀土元素 银金矿床 矽卡岩浆 贯入充填 

分 类 号：P618.5[天文地球—矿床学]