矿物晶体都有一定的化学组成和结晶构造,它们决定矿物的一切性质。然而,天然矿物并非理想晶体。它们在复杂的地质条件下生长,总是难以按理想发育。其内部质点的排列并不严格地服从空间格子规律,可以存在各种空位、位错等缺陷和镶嵌构造。在外形上,属于同一单形的各个晶面,经常发育不等而成为常见的所谓“歪形”,也就不能严格地遵循晶体的几何规律了。矿物形成之 Mineral crystals have a certain chemical composition and crystalline structure, they determine all the properties of minerals. However, natural minerals are not ideal crystals. They grow under complex geological conditions and are often difficult to grow as ideally. The arrangement of its internal particles does not strictly follow the rules of the space lattice, there may be a variety of vacancies, dislocations and other defects and mosaic structure. In appearance, all the crystal faces belonging to the same single shape often develop into the so-called “crooked” shapes, and the crystal regularities can not be strictly followed. Mineral formation