摘要
皖南地区上震旦统蓝田组，由黑色炭质页岩、泥灰岩和含Mn白云岩、白云质灰岩等组成，厚120～160m，是皖南Ag、Pb、Zn、Cu多金属矿的重要赋矿层位。研究结果表明，蓝田组Ag有明显富集，丰度493×10^(－9)。蓝田组存在3个富Ag层段，且与Ag多金属矿床中的矿体分布是对应的；Ag的富集受制于缺氧环境或热水作用；Ag来源于陆源细碎屑以及热水沉积物；Ag的赋存方式与含Bi、Sb、Hg等矿物相关。
The upper Sinian Lantian Formation 120～160 m thick，in southern Anhui，is composed of black carbonaceous shale，marl，Mn-bearing dolomite and dolomitic limestone，and in an important horizon hosting Ag，Pb，Zn，Cu polymetallic deposits in southern Anhui．Study suggest the following:the Lantian Formation exhibits marked Ag enrichment with an abundance of 493×10^(－9):there are three Ag-rich beds in the Lantian Formation，which may correspond with the distribution of the orebodies in the Ag polymetallic deposits；the Ag enrichment in the Lantian Formation was due to the anoxic environment or hydrothermal processes；Ag was derived from terrigenous fine clastic deposits and hydrothermal deposits；the occurrence of Ag was related to the minerals bearing Bi，Sb and Hg．
出处
《中国区域地质》
CAS
CSCD
北大核心
2001年第2期209-215,共7页
Regional Geology of China
基金
中国有色金属工业总公司银矿基金!(91-Ag-4)
