论文部分内容阅读
微量元素地球化学研究已成为现代矿床学研究的重要内容,微量元素具有地球化学指示剂的功能,微量元素的含量和分配以及与相近似元素的比值,可作为各种成岩成矿物理化学条件的灵敏指示剂,尤其对指导矿床成因、成矿规律以及成矿预测等方面发挥着重要作用。大厂矿区花岗斑岩微量元素原始地幔标准化蛛网图(图1)上显示,Ba,Th表现为强烈亏损,Pb,U表现为明显富集(表1)。大离子亲石元素Sr的含量为108×10~(-6)~310×
Trace element geochemistry has become an important part of modern deposit research. Trace elements have the function of geochemical indicator, the content and distribution of trace elements and their ratio to similar elements, which can be used as the sensitivity of various physicochemical conditions of diagenesis and mineralization Indicators, in particular, play an important role in guiding the genesis of ore deposits, metallogenic regularity and ore-forming prediction. The original mantle normalized cobweb trace of trace elements from granite porphyry in Dachang ore district shows that Ba and Th show strong depletion and Pb and U show obvious enrichment (Table 1). The content of large ion lithophile Sr is 108 × 10 ~ (-6) ~ 310 ×