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一、引言玛瑙和矽化木都是由矽酸(SiO_2)造成的。矽酸占地壳组织的主要成分,普通不易溶解,但可以胶体状态存在于水中,尤其带有碱性的溶液,含矽酸的机会更多。由岩浆分离出来的热液或水汽里也含有相当成分的矽酸。雨水渗透地下,经过土壤岩石,浸蚀矽酸盐类矿物,使一部分矽酸变为胶状体,随潛水流徙,注入岩石的
First, the introduction of agate and siliconized wood are caused by silicic acid (SiO_2). Silicate, the main component of crustal tissue, is generally insoluble, but can be colloidal in water, especially with an alkaline solution, containing more opportunities for silicate. The magma separated from the hydrothermal or water vapor also contains a considerable component of silicic acid. Infiltration of rainwater underground, through soil rocks, erosion of silicate minerals, so that part of the silicate into a gel, with the migration of the submerged, into the rock