【摘要】：新寮崠銅多金屬礦床是近年來粵東地區(qū)新發(fā)現(xiàn)的銅多金屬礦床之一,礦區(qū)位于東南沿海錫、鎢、銅等重要礦產(chǎn)發(fā)育地區(qū),成礦地質(zhì)條件非常好。本文通過對(duì)礦體中黃銅礦的銅同位素研究表明,其δ~(65)Cu值(-0.34‰~+1.37‰)與斑巖型礦床的δ~(65)Cu值基本一致,成礦物質(zhì)Cu主要來源于深部巖漿,成礦流體顯示為中高溫(250~420℃)巖漿熱液特征,Cu的分餾與巖漿熱液活動(dòng)關(guān)系密切,礦體的形成與成礦流體出溶有關(guān)。銅同位素組成隨深度增加有增高趨勢(shì),能形成規(guī)模礦體。同時(shí),銅同位素可以直接指示熱源的位置,在熱液流體石英脈出現(xiàn)的區(qū)域,銅礦體δ~(65)Cu值都低于0,在熱液接觸帶、特殊的賦礦圍巖和構(gòu)造作用部位銅同位素值較高,預(yù)示著主礦體的邊緣或前鋒,是最為明顯的找礦標(biāo)志。
[Abstract]:The Xinliaodong copper polymetallic deposit is one of the newly discovered copper polymetallic deposits in eastern Guangdong in recent years. The ore area is located in the southeast coastal areas of important minerals such as tin, tungsten, copper and so on. The metallogenic geological conditions are very good. The copper isotopic study of chalcopyrite in the orebody shows that the 未 ~ (65) Cu value (-0.34 鈥，

本文編號(hào)：2332722