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叶蜡石为一种含铝硅酸盐矿物。晶体结构属2:1型最简单的二八面体端员矿物,其结构单元由上下两层 Si—O 四面体层组成。每个四面体层顶端的氧都指向结构单元层的中央,并与八面体所共有。层间结合是靠弱的范德华键连结,因此层内结合很强,层间结合很弱,容易解离成薄片。该矿物不像其它粘土矿物具备离子交换性能。它层内离子极少置换,因其层单胞电荷数近于零,且层内无吸引的阳离子,以区别其它粘土矿物。溧阳叶蜡石岩具多组分,主要成分以叶蜡石为主,其物化性能如下所述:一、漂阳叶蜡石岩化学性质叶蜡石的化学式:Al_2O_3·4SiO_2·H_2O。化学组成:Al_2O_3:28.3%;SiO_2:66.7%;H_2O;5%。溧阳叶蜡石岩按矿石类型划分,其化学组成(表1)。
Pyrophyllite is an aluminous silicate mineral. Crystal structure is the simplest type 2: 1 octahedron end member minerals, the structural unit consists of two layers of Si-O tetrahedron layer composition. The oxygen at the top of each tetrahedral layer points to the center of the structural unit layer and is shared with the octahedron. Inter-layer bonding is based on the weak van der Waals bond, so the layer is very strong, the combination of layers is weak, easy to dissociate into thin slices. This mineral does not have ion exchange properties like other clay minerals. The ions in the layer are rarely replaced, because the number of charge per unit cell is near zero, and there is no attractive cation in the layer to distinguish other clay minerals. Liyang pyrophyllite multi-component, the main component of pyrophyllite, its physicochemical properties are as follows: First, the chemical properties of the floating pyrophyllite pyrophyllite: Al 2 O 3 · 4SiO 2 · H 2 O. Chemical composition: Al 2 O 3: 28.3%; SiO 2: 66.7%; H 2 O; 5%. Liyang pyrophyllite by ore type, the chemical composition (Table 1).