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高岭石-多水高岭石演化系列共包括四种矿物:结晶良好的高岭石、结晶差的或b轴无序的高岭石、7多水高岭石和10多水高岭石。我们将结晶良好的高岭石和10多水高岭石分别视为这一演化系列的两个端元矿物,其余两种矿物则是演化系列的中间矿物。该系列中的矿物同属于1:1型含水的层状铝硅酸盐矿物,因而它们的化学成分基本相同,主要差别是在晶体结构上由于单位结构层沿c轴彼此堆叠的方式而引起从有序向无序变化,同时层间键力的减弱引起水分子进入,促使层间水的含量逐渐增大。基于以上特征,这一系列中的四种类型矿物受热以后的热效应很灵敏,详细研究它们在加热脱水过程中的变化规律,可以加深对矿物特性的认识和鉴别。
The kaolinite-polyhydrated kaolinite evolution series includes a total of four minerals: well-crystallized kaolinite, poorly crystalline or b-axis disordered kaolinite, more than 7 kaolinite and more than 10 kaolinite. We consider well crystallized kaolinite and more than 10 kaolinite as the two end-element minerals of this evolution series, respectively, while the remaining two minerals are intermediate minerals in the evolutionary series. The minerals in this series belong to the 1: 1 type of hydrous layered aluminosilicate minerals, so their chemical composition is basically the same. The main difference is that the crystal structure is caused by the stacking of unit structure layers along the c-axis Order disorderly change, at the same time the weakening of the interlayer bond force causes the water molecules to enter, prompting the water content of the interlayer to increase gradually. Based on the above characteristics, the thermal effects of the four types of minerals in this series are very sensitive, and their changes in the process of thermal dehydration are studied in detail to deepen the understanding and identification of mineral properties.