辽宁青城子地区煌斑岩与找矿预测

青城子地区煌斑岩与成矿具有密切的关系。本文详细研究了青城子地区不同空间分布的煌斑岩,并且对蚀变煌斑岩和未明显蚀变煌斑岩进行了地球化学测试分析工作。结果表明:煌斑岩具有幔源源区特征,又有壳源物质的混染特征;蚀变过程中,流体带来成矿元素Pb、Zn、Mo,带走Ti、Fe、V、Co、Ni元素;煌斑岩主量元素氧化物哈克图解呈现线性分布,说明它们之间具有演化趋势。大量钻孔中煌斑岩数量统计反映煌斑岩大致以青城子镇为中心,分别向二道→新岭→桃源、甸南→大地→小佟家堡子线性分布,这种分布与矿床/矿体分布规律相同,因此可以利用煌斑岩的分布规律指示矿床/矿体潜力分布区。

Lamprophyres and ore predition in Qingchengzi area, Liaoning province

In Qingchengzi area lamprophres are closely related to mineralization.Detail study is carried out on lamprophres distributed in different spaces of Qingchengzi area.Samples collected from the altered lamporphyres and unaltered ones are geochemically analyzed.The analysis show that the lamprophyre originates from mantle and is contaminated with crust materials.During alteration the ore elements such as Pb,Zn and Mo moved in and the non-ore elements of Ti,Fe,V,Co and Ni out with fluid.The Haker diagram of major oxides shows a linear distribution,indicating that there is an evolutionary trend between them.Statistics of boreholes show that the lamprophyres are linearly distributed from the Qingchengzi center to Erdao→Xinling→Taoyuan and to Diannan→Dadi→Xiaotongjiapuzi.The distributin pattern is coincided with that of ore deposits and bodies.Therefore it can be used to predict the potential mineralization areas.