在偏光显微镜下,用目前的黏土矿物鉴定方法,难以区分微细粒的沉凝灰岩和泥质岩。为此,提出了一种微细沉积物中黏土的鉴定方法。此方法,在偏光显微镜下能快速、准确地确定有无黏土矿物,区分微细沉凝灰岩和正常沉积的泥质岩,避免微细沉积物(岩)岩性鉴定出错。 Under polarized light microscopy, it is difficult to differentiate fine-grained tuffs and argillaceous rocks from the current clay mineral identification methods. Therefore, a method of identifying clay in fine sediments is proposed. This method can quickly and accurately determine the presence or absence of clay minerals under polarized light microscope to distinguish fine sedimentary tuffs from normal sedimentary shale so as to avoid the fine sediment lithology identification error.