摘要
河三铅锌（银）矿床是与燕山期火山活动有关的中－高温（成矿温度２６１～４２１℃）热液交代（充填）型矿床，成矿物质主要来源于次火山岩（花岗斑岩）．矿床产出受火山岩系、断裂构造、下志留统角砾状灰岩控制。矿床中Ａｇ含量变化较大，与Ｐｂ＋Ｚｎ关系较密切；Ｃｄ与Ｚｎ密切相关，含量变化不大．矿田内应注意寻找“斑岩型”铅锌矿床及破碎带次生富集型银矿床。
Pb-Zn (Ag) deposit of Hesan ore field is a hydrothermal replacement (filling) ore deposit related to the volcanizm of Yenshan period, minerogenic temperature is 261-420℃,minerogenic materials are mainly derived from subvolcanic rock-granite porphyry. The mineralization is controlled by the volcanic rock series, fault structures and brecciform carbonates (S_1￣(b-2)). In the ore deposit, Ag has a bigger variance in content and a closer relationship with Ph+Zn; Cd is closely related to Zn and has a little variance in content. In addition, in Hesan ore field, it is necessary to pay attention to look for the 'porphyry rype'Ph-Zn deposit and the secondary enrichment type Ag deposit in the fault zone.
关键词
铅锌矿床
成矿规律
银矿床
成因
ore deposit
Pb-Zn deposit
minerogenic regularity
metallogeny
sourceof minerogenic matter
Guangxi
