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在多金属矿、含铜黄铁矿、金矿以及其他非汞矿床的矿石中,汞含量要比围岩高5～1000倍,从而在矿体上部形成汞气分散晕.表生作用能够加速汞由固体向气体转化的进程.产生这种情况,是由于任一温度下所发生的汞的升华作用.矿带和矿体的气态汞,在其扩散与渗滤过程中,主要是被上覆岩层所吸附;部分汞则以游离气体和吸留气体的形式存在于土壤之中.由深部带来的汞蒸气和由于输送到大气圈以及地表的剥蚀作用而消耗的汞蒸气之间,通常是处于一种动态的平衡状态.从埋藏矿体和潜埋藏矿体进入到大气圈中的气态汞很少,以致在现代测量技术条件下很难测出矿体上空的汞气晕.作为大气圈
In polymetallic ore, copper-bearing pyrite, gold ore and other non-mercury ore deposits, the mercury content is 5 to 1000 times higher than that of the surrounding rock, resulting in the formation of mercury gas dispersal haloes in the upper part of the ore body. The conversion of mercury from the solid to the gas occurs as a result of the sublimation of mercury occurring at any temperature.The gaseous mercury in the orebodies and ore bodies, mainly in the diffusion and infiltration processes, Some of the mercury is present in the soil in the form of free gas and occluded gas, between the mercury vapor from the deep and the mercury vapor consumed due to denudation to the atmosphere and surface, Is in a dynamic equilibrium state.Gaseous mercury entering into the atmosphere from burial ore bodies and buried burial ore bodies is rare, so that it is difficult to measure the mercury gas halo over the ore body under the conditions of modern measurement techniques. ring