岩矿测试Issue(3)：366-374,9.DOI:10.15898/j.cnki.11-2131/td.2015.03.018
应用电感耦合等离子体质谱法研究西藏甲玛超大型铜多金属矿床辉钼矿稀土元素和微量元素地球化学特征
ICP-MS Analysis of Rare Earth Elements and Trace Elements of Molybdenite in the Jiama Super-large Copper Polymetallic Deposit,Tibet
摘要
Abstract
The Jiama super-large copper polymetallic deposit has molybdenum resources in excess of one million tons,and molybdenite is the most important molybdenum mineral.Rare earth elements (REEs)and trace elements of molybdenite from different stages were analyzed by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)in order to understand the source and nature of ore-forming fluids.Molybdenite contains REE contents ranging from 39.34 to 168.1 μg/g,which is similar to those of porphyry and skarn deposits at Jiama.From early to late stage, REE contents of molybdenite increase and light rare earth elements are relatively enriched,indicating the ore-forming fluids might be derived from magma.Molybdenite shows REE patterns with negative Eu and Ce anomalies, and positive Sm anomaly.Negative Eu anomaly suggest that the ore-forming fluids are relatively reduced. Molybdenite contains high Cu,Pb,Zn,Bi indicating the enrichment of these elements in fluids.关键词
甲玛铜多金属矿床/辉钼矿/稀土元素/微量元素/电感耦合等离子体质谱法Key words
Jiama copper polymetallic deposit/molybdenite/rare earth elements/trace elements/Inductively Coupled Plasma-Mass Spectrometry分类
天文与地球科学引用本文复制引用
应立娟,林彬,王立强,李超,王阔..应用电感耦合等离子体质谱法研究西藏甲玛超大型铜多金属矿床辉钼矿稀土元素和微量元素地球化学特征[J].岩矿测试,2015,(3):366-374,9.基金项目
国家自然科学青年基金项目（41302058）；中国科技部重大仪器专项（2011 YQ050069）；中国地质大调查项目 （）
