藏北邦多一带重砂(金)特征研究

Study on the character of panning concentrate(gold) in Bangduo, Tibet

从重砂矿物方面对邦多一带的金矿特征及其分布加以分析。金及相伴的白钨矿、锆石、金红石等重砂矿物分布于那朗岩体的岩基之内外接触带上,其原岩可能在母岩或搬运通道附近。砂金成色特征研究表明,本区成矿类型为低温热液型近源成矿。

The character and its distribution of the gold deposit in Bangduo are discussed by panning. Gold and its associated panning mineral such as scheelite, zircon and rutile is distributed over the inner and outer contact zone of the batholith of Nalang ore body, and its protolith is adjoin the parent rock or the transport channel. Epithermal proximal deposit is the main metallogenic type of this area according to the study on the fineness features of placer gold.