摘要
琼海烟塘梅岭铜钼矿床位于海南五指山隆起东北侧的一个"角砾岩筒"中,该"角砾岩筒"的形成受南北向、东西向构造-岩浆岩带控制,与燕山期花岗闪长岩、花岗闪长斑岩关系密切。工业矿体主要集中在岩筒边缘接触带附近,共发现大小铜、钼矿体23个,矿体多呈透镜状、脉状,全为盲矿体,埋深数十米至400余米。矿石为细脉浸染状,Cu品位0.4%～0.9%,Mo品位0.01%～0.1%。蚀变带可粗略划分为钾化带、石英-绢云母化带和青盘岩化带,可能属斑岩型矿床。
The Yantang CuMo deposit is located in a breccia pipe of northeast Wuzhishan uplift,Hainan Island.The forming of the pipe is controlled by the SN and EW tectonomagmatic belts,closely related to the Cretaceous monzonitic granodiorite and granodioriteporphyry.Industrial orebodies are mainly distributed along the pipe and its outer contact zone.Twentythree CuMo orebodies of different sizes are found.The orebodies located 10 to 400 meters below the surface as lens or veins.Ore emerge veinuledisseminated structures with Cu grade ranging from 0.4% to 0.9% and Mo grade ranging from 0.01% to 0.1%.Alteration zoning consist of potassic,silicicsericitic and propylitic zone.According to the above features,the Yantang CuMo deposit is regarded as a porphyry deposit.
出处
《华南地质与矿产》
CAS
2003年第3期30-36,共7页
Geology and Mineral Resources of South China
基金
中国地质调查局地质调查项目(20011300041).
关键词
铜钼矿床
角砾岩筒
地后特征
海南岛
Cu-Mo deposit
breccia pipe
geological feature
Hainan Island
