辽宁八家子铅锌矿床锰的赋存状态及其地质意义  

Manganese occurrence in Bajiazi lead-zinc deposit from Liaoning and its geological significance

作　　者：刘雪松[1] 赵会民[2] 韩亚杰[1] 

机构地区：[1]吉林大学地质博物馆,长春130026 [2]中石油辽河油田分公司,辽宁盘锦124010

出　　处：《世界地质》2008年第3期267-269,274,共4页World Geology

摘　　要：八家子铅锌矿床中矿石矿物的物相和电子探针分析表明,锰在闪锌矿中与锌呈类质同象状态。石英和黄铁矿的成矿温度的测定结果:炉沟矿段石英成矿温度为315℃,黄铁矿为334℃,Zn/Mn比值约为10;古洞沟矿段石英为273℃,黄铁矿为282℃,Zn/Mn比值约为16;冰沟矿段石英为156℃,黄铁矿为160℃,Zn/Mn比值约为21。不同矿段中锰在闪锌矿中类质同相能力随成矿温度的降低而减弱。The analyses of phase and electron microprobe indicate Mn^2＋ replaces Zn2＋ as allomerism in the crystal structure of the ore minerals in the deposit.In Lugou,Gudonggou and Binggou ore blocks,the formational temperatures for quartz are 315℃,273℃ and 156℃,respectively;while for pyrite are 334℃,282℃ and 160℃.The ratios of Zn^2＋ and Mn^2＋ are about 10,16 and 21,accordingly.The results show that the ability of allomerism replacement for Mn^2＋ in the different ore blocks weakened along with the formational temperature increasing.

关 键 词：成矿温度 赋存状态 八家子铅锌矿 辽宁 

分 类 号：P618.4[天文地球—矿床学] P574[天文地球—地质学]