青海省五龙沟矿区金矿化的石英稀土元素地球化学指示

INDICATION OF QUARTZ REE GEOCHEMISTRY ON GOLD MINERALIZATION IN WULONGGOU GOLD-ORE AREA, EASTERN KUNLUN MOUNTAINS, QINGHAI PROVINCE

五龙沟金矿区硅化石英的稀土元素地球化学特征可较好地反映金矿化程度和多期次成矿特性。金矿化愈好 ,则Eu/Eu ,Ce/Ce ,LREE/HREE和La/Yb值愈高。稀土元素含量与金矿化没有明显的相关性 ,但∑REE值以及配分模式可指示不同的矿化期。矿化作用从早到晚 ,∑REE值逐渐升高。

REE geochemistry of silicated quartz reflects intensity and multiple epochs of gold mineralization in Wulonggou gold ore area. It is shown that the higher the Eu/Eu *, Ce/Ce *, LREE/HREE and La/Yb values are, the better the gold mineralization is. The REE content is not related to the mineralization intensity, but ∑REE value and the REE pattern curve could indicate different epochs of the mineralization. The ∑REE value becomes higher from early to late mineralization.