丹寨汞矿卤素元素地球化学特征

丹寨汞矿是产于碳酸盐岩地层中以汞为主伴生金的浅成低温层控矿床。本文对该矿床矿石及围岩中的卤素元素分布特征进行了一定的研究。研究结果表明，（１）矿区内Ｂｒ、Ｉ的富集程度远比Ｆ、Ｃｌ高，从远矿围岩→近矿围岩→汞矿石Ｂｒ、Ｉ含量呈增加趋势，金矿石中Ｂｒ、Ｉ含量比近矿及远矿围岩含量低，且Ｉ的富集系数小于１；（２）Ｆ在金矿化岩石及近矿围岩中含量较高；（３）Ｃｌ的变化规律不甚明显，且富集系统均小于１；（４）垂

GEOCHEMICAL DISTRIBUTION CHARACTERISTICS OF HELOGEN ELEMENTS IN THE DANZHAI Hg DEPOSIT, EASTERN GUIZHOU PROVINCE

The Danzhai mercury deposit, which is dominated by Hg ore and associated with Au ore, is an epithermal strata bound deposit that occurs in carbonate rock strata. This paper discusses the distribution characteristics of halogen elements in this deposit, indicating that:(1) the enrichment extent of Br and I is much higher than that of F and Cl; and F, Cl in Hg ores and near ore wall rocks with near ores than in Au ores and distant wall rocks; (2) from the distant wall rocks to near ore wall rocks to Hg ores, Br and I contents gradually increase; (3) the contents of Br and I in Au ores are lower than those in near and distant ore wall rocks and their enrichment coefficients are less than 1; (4) gold ores and near ore wall rocks are enriched in F, Cl slightly and the enrichment coefficient is lesser than 1; (5) vertically, the contents of Br and I in Hg ores are higher in the upper part than in the lower part in the deposit, Br and I are mostly enriched in the middle section (653-690m); (6) Br and I can be regarded as the indicator elements for prospecting Hg deposits.