(1. 中南大學(xué) 有色金屬成礦預(yù)測(cè)教育部重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083；
2. 湖南有色控股集團(tuán) 礦產(chǎn)資源部，長(zhǎng)沙 410015)
摘 要: 詳細(xì)論述大廠錫多金屬礦床中地層和礦石的微量元素和主要金屬元素與銦的關(guān)系，巖漿巖、近礦圍巖和礦石的稀土元素特征與銦的關(guān)系以及銦與成礦溫度之間的關(guān)系。微量元素分析結(jié)果表明：在賦礦地層中銦的含量較高，且不同巖性之間的銦含量變化較大，而在礦石中銦與錫和鎘均呈正相關(guān)關(guān)系，與鋅呈負(fù)相關(guān)關(guān)系。稀土元素分析結(jié)果表明，在巖漿巖中銦含量與δEu成負(fù)相關(guān)，在近礦圍巖中銦含量與δEu呈正相關(guān)，在礦石中銦含量與δEu、LREE/HREE、(La/Yb)N關(guān)系密切，而且銦在相對(duì)氧化、弱堿性的高溫階段更易于富集。最后對(duì)大廠錫多金屬礦床中銦富集的有利部位進(jìn)行了預(yù)測(cè)。
關(guān)鍵字: 大廠錫多金屬礦床；銦；圍巖；微量元素；稀土元素
Guangxi Province
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals,
Ministry of Education, Central South University, Changsha 410083, China;
2. Department of Mineral Resources, Hunan Nonferrous Metals Holding Group Co., Ltd., Changsha 410015, China）
Abstract:The preliminarily research focused on dispersed elements in Dachang tin-polymetallic deposits of Guangxi province. The relationships among indium, trace elements and main metal elements of wall rock and ore were introduced, as well as the relationships among indium content and distribution, and the typical characteristics of rare earth elements of igneous, wall rock and ore. The trace element analyses results suggest that indium enriches in the wall rock and varies in different lithologies, and indium is prositively correlated to Sn and Cd, and negatively correlated to Zn. The rare earth element analyses results suggest that indium content is negatively correlated to δEu in igneous rocks and positively correlated to δEu in wall rocks. The indium contents are intimately associated with δEu, LREE/HREE, (La/Yb)N in ores. The relative oxidized, weakly alkali and high temperature stage is favorable for enrichment of indium during the ore-forming process. At the end, the enrichment prospect of indium was given here.
Key words: Dachang tin-polymetallic deposit; indium; wall rock; trace element; rare earth element
