矿物气液包裹体几种特殊均一爆裂现象

近几年来,我们在大量气液包裹体测温实验中,发现有些包裹体气液两相在升温时不按正常规律变化,出现一些反常现象,这种异常现象不能代表真实的成矿温度,所以进行气液包裹体测温时,应该将这种异常现象和正常现象区分开,从而得到正确的成矿温度。

Some special decrepitation phenomena of pneumato-hydatogenetic inclusions of minerals

In the process of measuring the temperature of a great number of pneumato-hydatogenetic inclusions the author has found that some of them change abnormally both in gaseous and aqueous phases. The facts are enumerated as follows: 1. The blebs will increase in volume and decrepitate before the homogenization takes place when some fluid inclusions are heated. 2. The blebs will decrease in volume and decrepitate before the homogenization takes place when some inclusions are heated. 3. The blebs wm expand first, then contract when some fluid inclusions are heated. 4. Some fluid inclusions will be homogenized twice when heated. 5. For saline minerals, the inclusions of pure hydatogenetic phase will produce blebs when heated, and the blebs will increase in volume with the rise of temperature till decrepitation happens. The author therefore makes the suggestion that a clear distinction should be made between normal and abnormal phenomena in measuring the temperature of pneumato-hydatogenic inclusions, otherwise the ore-forming temperature cannot be determined with confidence.