对广东和寮铅锌矿不同岩石样品进行稀土元素地球化学特征的测试对比分析,结果表明,四种岩石样品稀土元素总量存在差异,矿石稀土元素总量介于混合岩和大理岩之间,且更接近于这两种岩石,表明了铅锌矿的形成与混合岩和大理岩关系可能更为密切;铅锌矿矿石的稀土元素配分模式曲线与混合岩和大理岩极为相近,轻重稀土的富集程度介于混合岩和大理岩之间,这也反映了区内铅锌矿的形成与混合岩和大理岩有着密切的关系;混合岩和大理岩为铅锌矿的主要矿源层,在混合岩化作用形成混合岩的过程中,混合岩化作用产生的热液与围岩大理岩发生反应,生成了富含铅锌矿的矿石.所以,在研究区今后进行矿产勘查时,应更加关注混合岩和大理岩的接触地段.
Comparative analysis on the geochemical characteristics of REE of Heliao lead-zinc deposit in Guangdong province showed that the amounts of REE in different rocks are not same with each other,and the amount of REE in lead-zinc deposit is between migmatite and marble.So it is inferred that the formation of lead-zinc deposit may have a closer relationship with migmatite and marble.The partition curve and enrichment degree of rare earths in lead-zinc deposit REE is similar to that of migmatite and marble.It is more likely that,the migmatite and marble in the research region are the main material sources of the lead-zinc deposit.During the formation of migmatites in migmatization,the hydrothermal fluid produced by migmatization is reaction with marble,and generate the ore rich in lead and zinc.It is necessary to pay more attention to the contact areas of migmatite and marble in the further exploration works in the research region.
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