Major Types, Time-Space Distribution and Metallogeneses of Polymetallic Deposits in the Qimantage Metallogenic Belt, Eastern Kunlun Area

Based on some fieldwork and geochemical analyses in recent years,the metallogenic setting,major types,basic geological characteristics,time-space distribution and metallogeneses of polymetallic deposits (occurrences) in the Qimantage metallogenicbelt,Eastern Kunlun area are described briefly in this paper.The ore-forming elements are comprehensive and dominated by Fe,Cu,Pb,Zn,Mo,W,Sn and Au.Several various styles of polymet allic mineralization in the Qimantage metallogenic belt have been recognized and Clasified into the skarn-type deposit,porphyry deposit,hydrothermal superimposed strata-bound deposit and hy pothermal deposit.Two important mineralization ages of both Middle-Late Triassic and early Paleozoic for polymetallic deposits are determined in the belt.For Middle to Late Triassic porphyry and skarn-type deposits,the ore-forming materials were mainly derived from magmatic and carbonate-bearing strata,and ore-forming fluids came chiefly from magmatic fluids; and both of them belong to products of the same tectonomagmatic cycle of Triassic period,although they formed in different stage,different depth and different place.