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广西大厂锡多金属矿床是中国也是世界上最大的锡多金属矿床之一,其锡、锌、锑、砷、银、铟、镓等金属元素均达到大型超大型规模。通过对大厂矿区91号、92号和100号矿体中矿石内非金属矿物稀土元素的研究,发现91号和92号矿体中均存在高稀土元素含量的方解石,ΣREE的最高含量达940.42×10-6,平均799.2×10-6。高稀土元素含量方解石的存在,表明在大厂超大型矿床的形成过程中可能有幔源流体的参与。
Guangxi Dachang tin polymetallic deposit is one of the largest tin polymetallic deposits in China and the world. Its tin, zinc, antimony, arsenic, silver, indium, gallium and other metal elements have reached large-scale large scale. Through the study of rare earth elements in non-metallic minerals in No. 91, No. 92 and No. 100 orebodies in Dachang Mining Area, it is found that calcite with high REE content exists in No. 91 and No. 92 ore bodies, and the maximum content of ΣREE reaches 940.42 × 10-6, with an average of 799.2 × 10-6. The presence of high REE calcite suggests that there may be mantle-derived fluids involved in the formation of the Dachang super-large deposit.