“粘土”这一概念,与其说是工艺学的,还不如说是岩石-矿物学的概念。所以迄今为止究竟那些矿物应当属于粘土类还没有一个确切的概念。早在1923年,列宁格勒大学教授П.А.泽米亚钦斯基提出了“什么是粘土?”他在分析了几乎所有的文献资料以后,否定了前人所作的一切结论。П.А.泽米亚钦斯基对粘土提出了下列定义:“凡是土状矿物质,或按岩石学概念,凡是与水和其它液体一起能形成可塑性粘土团块、干燥后能保持原来形状、而焙烧后具有岩石般的坚硬性的土状碎屑岩,均称为粘土”。П.А.泽米亚钦斯基在这部著作中把所有 The concept of “clay” is not so much a technology as a rock-mineralogy concept. So to date there is no definitive notion of what those minerals should belong to clay. As early as 1923, Leningrad President Professor П.А. Zamyaczinski proposed “What is clay?” After analyzing almost all the literature, he denied all the conclusions made by his predecessors. П.А. Zamyachinski proposed the following definition for clay: “Any earthy mineral or, according to the concept of petrology, clay clays that form together with water and other liquids and retain their original shape after drying Shape, and rock-like rock solidified calcined clastic rock, are called clay ”. П.А. Zemia Achinski put all in this book