可能多数读者都知道,我们赖以生存的地球表面是由岩石构成的,而且不论哪种岩石都是由所谓矿物组成的,于是大家就会想当然地认为,矿物的种类一定有很多。其实,世界上的矿物种类比人们想象的要少很多。将那些肉眼分不清的以及非常罕见的矿物全包括在内,也只有3500多种。在如此众多的矿物中,有一类矿物非常特殊,它 Most readers may know that the surface of the Earth upon which we depend for existence is composed of rocks and that no matter which rock is made up of so-called minerals, one would assume that there must be many kinds of minerals. In fact, the world’s mineral species is much less than people think. There are only more than 3,500 species that are totally indistinguishable and very rare. Among so many minerals, one type of mineral is very special, it