广西昭平湾岛金矿地质特征及三维建模意义

采用Micromine公司的Kan-Tan 3D软件将广西湾岛金矿的探槽、钻孔和坑道数据等资料进行三维地质建模,建立了地层、构造、岩浆岩和矿体的三维实体模型,实现了湾岛金矿矿体的三维可视化模型,充分展示出矿体与地层、构造和岩浆岩之间的空间关系。结合矿床地质特征,推断出斑岩体可能为主要的赋矿围岩而不是成矿母岩,该矿床可能是热液脉型矿床而不是斑岩型矿床;另外,通过对矿体各微元块进行品位插值,呈现出Au元素随深度增高的现象,推断出矿区深部可能具有较大找矿空间,为今后的勘查工作提供了依据。

SIGNIFICANCE OF 3D SOLID MODEL AND GEOLOGICAL CHARACTERS OF WANDAO GOLD DEPOSIT, GUANGXI

Wandao gold deposit is known as one of the important gold deposits in Dayaoshan metallogenic belt . This paper established the 3D Solid model for Wandao gold deposit using the data of trench, drilling, tunnel and the result of the analysis. This model clearly shows the spatial relationships of the stratum, structure and magmatic rocks, which indicate that the porphyry should probably he the host rocks, not the parent rocks, and also show this gold deposit should be hydrothemal vein-typed deposit, not the porphyry type deposit. In addition, this model also shows Au becomes richer with the increasing depth of the ore bodies. These conclusions provide the scientific basis for the further exploitation and economic evaluation.