含鉄冷泉の沈殿生成物の地球化学的研究
特に含水珪酸, 重晶石, 方解石および石膏の合成に関連して
1983 年 99 巻 1141 号 p. 173-178
詳細
1983 年 99 巻 1141 号 p. 173-178
This paper is concerned with the studies on the physical and chemical properties of synthetic meta-silicic acid, barite, calcite and gypsum, and the relation between pH and geological environments in the case of natural mineral depositions. Furthermore on the basis of above experiments, it is discussed that the case of ferric hydroxide, calcite, gypsum and meta silicic acid are precipitated at the same solution system.
The followings became clear after examining the experimental results.
1) The crystallization of ferric hydroxide such as goethite and lepidocrosite is obstructed by the presence of meta-silicic acid, and the heterogeneous cohesion of the both materials is took place.
2) The most suitable condition for meta-silicic acid is about 1.0 pH.
3) High grade crystallization of calcite and gypsum are formed at the condition of the pH 8.0 to 8.3, 2.5 to 3.5 respectively.
