摘要
为详细分析贵州纳雍县水东钼镍多金属矿含矿岩系的组成结构和物质成分，本文对钻孔ZK010中岩石和矿石进行系统采样分析。结果显示，与围岩相比矿层具有低硅低铝、高铁高烧失量等特点；矿石富集了一套基性元素（Ag、Fe、Ni、cu等），同时也富集了一套酸性元素（Mo、Zn、Sn、U等），形成双峰式元素组合；含矿岩系具有轻微的Ce负异常，8Ce值为0．67～0．92；钼镍矿石显示Eu正异常，两件样品的8Eu值分别为1．44和1．11；围岩基本无异常，6Eu值为0．85～1．12。地球化学特征表明，矿层形成于缺氧的还原环境，并有热水作用参与成矿。
The samples, which occurred in Lower Cambrian Niutitang formation, were taken from the drill of ZK010 in the Shuidong Mo-Ni polymetallic deposit, Nayong, Guizhou. The purpose of this study is to analysis the struc- ture and the composition of the mineral-hosting rocks. The major and trace elements analyses data showed that the Mo-Ni polymetallic ore deposit occurs in carbonaceous shales. Compared with the wall rocks, the ores contain less Si, A1, more Fe and higher LOI （Loss on ignition）. The ores enrich not only some base elements （Ag, Fe, Ni, Cu）, but also some acid elements （Mo, Zn, Sn, U）, showing a bimodal element association characteristics. The mineral-hosting rocks show slightly Ce negative anomaly and their 3Ce values are 0. 67--0. 92. The ores show posi- tive Eu anomaly, with two measured 3Eu values are 1.44 and 1.11, but the wall rocks do not show such anomaly. The geochemical characteristics of the deposit indicate an anaerobic environment where the ore was deposited by hy- drothermal mineralization.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2013年第6期759-768,共10页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金资助项目(41173064)
矿床地球化学国家重点实验室"十二五"资助项目(SKLODG-ZY125-08)
