论文部分内容阅读
影响花岗岩耐酸耐碱性的因素主要有:岩石的化学成分、矿物成分,种属、时代和结构构造。花岗岩耐酸度随SiO_2含量增加而增加,而耐碱度与SiO_2的关系,则比较复杂。由石英、钾长石和少量斜长石组成的钾长花岗岩,其耐酸耐碱度最好,属耐酸耐碱型;由石英、钾长石和斜长石组成的普通花岗岩,其耐酸度较好,耐碱度较差,应属耐酸型;二长花岗岩和花岗闪长岩的耐酸度均较低,而耐碱度都较高,应属耐碱型。花岗岩耐酸耐碱性与岩石时代、结构构造的关系亦很密切,以燕山晚期第三次浸入的中细粒钾长花岗岩的耐酸耐碱度为最好。
The factors affecting the acid and alkali resistance of granite are: chemical composition, mineral composition, species, age, and structure of the rock. The acid resistance of granite increases with the increase of SiO2 content, while the relationship between alkali resistance and SiO2 is more complicated. Potassium feldspar consisting of quartz, potash feldspar, and a small amount of plagioclase has the best acid and alkali resistance, and is an acid and alkali resistant type. General granite composed of quartz, potash feldspar, and plagioclase has good acid resistance. Alkali resistance is poor, should be acid-resistant type; two long granite and granodiorite have low acid resistance, and alkali resistance are higher, should be alkali-resistant. The relationship between acid and alkali resistance of granites is closely related to the age and structure of rocks. The acid and alkali resistance of medium fine-grained long-gray granites immersed for the third time in the late Yanshanian period is the best.