Science. 1962 Mar 16;135(3507):890-8. doi: 10.1126/science.135.3507.890.
The structures of the clay minerals are reasonably well known, but greater detail and more precision are needed if the properties of clays and soils are to be fully understood. For example, the selective adsorptive and catalytic properties and the reaction with organic materials vary with the character of the clay mineral, but the structural factors that control such properties are not well understood. Research is urgently needed on the structure of pure clay minerals and on the reactions of pure clay minerals with organic and inorganic materials. Much past research on clay-mineral reactions has little fundamental value because the clay that was used was composed of a mixture of minerals which were not well characterized. It is not a simple matter to find pure samples of many of the clay minerals, and to a considerable extent progress depends on finding such pure minerals or preparing them in the laboratory.
粘土矿物的结构已经相当清楚，但如果要充分了解粘土和土壤的性质，则需要更详细和更精确的信息。例如，选择性吸附和催化特性以及与有机材料的反应随粘土矿物的特性而变化，但控制这些特性的结构因素还不是很清楚。迫切需要对纯粘土矿物的结构以及纯粘土矿物与有机和无机材料的反应进行研究。过去对粘土矿物反应的研究中，由于所使用的粘土是由未很好表征的多种矿物混合而成的，因此其基础价值不大。找到许多粘土矿物的纯样品并不是一件简单的事情，在很大程度上，进展取决于是否能够找到这些纯矿物或在实验室中制备它们。
