架状

Cage

具有由一系列[ZO4]四面体以角顶相连成三维无限伸展的架状硅氧骨干的硅酸盐矿物。除极个别例外，几乎所有架状硅氧骨干中的每个[ZO4]四面体均以其全部的四个角顶与相邻四面体共用而相连接，所有的O2-全为桥氧。当Z全部为Si4+时，硅氧骨干本身电荷以达平衡，不能再与其他阳离子相键合。

Silicate mineral with a series of [ZO4] - shaped silicon - oxygen - shaft, connected to the top of the corner of the top of the frame. In addition to a very few exceptions, almost all of the [ZO4] in the frame of the silicon oxide backbone is shared with the adjacent tetrahedral, and all the O2- is the bridge oxygen. When the Z is all Si4+, the silicon oxide backbone itself charges in order to balance, and can not be bonded with other cations.

石英族矿物的晶体结构正好就是如此。因此，从化学组成上石英族矿物（SiO2）归属于氧化物矿物。但不少人从结构角度把它们归属于架状结构硅酸盐矿物。为了能有剩余的负电荷再与其他金属阳离子相结合，一般的架状硅氧骨干中均有部分Si4+被Al3+或较少被Be2+、B3+等类质同象替代。故绝大多数架状结构硅酸盐矿物都是铝硅酸盐。与骨架相结合的金属阳离子主要是电价低而半径大的K+、Na+、Ca2+、Ba2+等。

The crystal structure of the quartz crystal is exactly the case. Therefore, from the chemical composition of upper Yingzu minerals (SiO2) belong to the oxide minerals. But a lot of people from the structural point of view they belong to the structure of the structure of silicate minerals. In order to be able to have the remaining negative charge and then combined with other metal cations, the general framework of the silicon oxide backbone in the Al3+ or less are Be2+, B3+, and other similar to the same as the replacement. Therefore, the vast majority of frame structure of silicate minerals are aluminum silicate. The metal cation which is combined with the framework is mainly the K+, Na+, Ca2+, Ba2+, etc..