摘要
贵州６个不同类型的主要汞矿床，其矿石和辰砂的微量元素，特别是其中的分散元素和稀土元素有着明显差别，表明各汞矿床的成矿物质来源是不相同的。
The six major mercury deposits in Guizhou Province are different fromeach other in minor element characteristics of ores and cinnabar,and theirdispersed elements and rare earth elements,in particular,have respective dis-tinguishing features.In the South China folded belt there are quite a numberof mercury-gold metallogenic belts, which contain somewhat different ore depo-sits.The Lanmuchang ore deposit of Xingren County contains extremely highTl but negligible amounts of Au, belonging to mercury-thallium deposit, whe-reas the Hongfachang ore deposit of Danzhai County contains relatively highAu but very little Tl, being of a mercury-gold deposit,As is extraordinarilyhigh in cinnabar.In the Dadongla orefield of Tongren County within theYangtze paraplatform,except for Zn in ores and relatively high Se in cinna-bar,contents of most elements are rather low;in the Muyouchang ore depositof Wuchuan County,contents of various elements are notably low in ores andcinnabar; due to the superimposition and transformation of repeated mineral-ization,the Baimadong ore deposit of Kaiyang County has become a mercury--uranium-molybdenum deposit,whose cinnabar contains fairly high Mo,Znand Sb ;the Zhifang orefield of Huangping County has remarkably high Sein ores and cinnabar, with also considerable amounts of Cu,Pb and Ag incinnabar, thus being of a mercury-selenium deposit.∑REE values of cinnabarfrom the six ore deposits are all lower than the abundanca of the crust andare mostly lower than the abundance of the upper mantle;∑Ce/∑Y> 1,dominated exclusively by LREE,nevertheless, REE contents and distributionpatterns of cinnabar are obviously different in different ore deposits.Accor-ding to large quantities of analytical data,the ore-forming solution for mer-cury deposits was a kind of high-salinity and high-density underground hotbrine with the addition of meteoric water,which could dissolve and extractmercury from the strata and rocks during its long circulation. Due to thecompositional inhomogeneity of the crustal and uppe
出处
《矿床地质》
CAS
CSCD
北大核心
1994年第3期250-259,共10页
Mineral Deposits
关键词
汞矿床
微量元素
分散元素
稀土族
mercury deposit,minor element,dispersed element,rare earthelement, Guizhou
