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近年来,造岩矿物的研究,无论在广度或深度方面,都有很大进展。这不仅加深了对造岩矿物本身的认识,而且对提高整个矿物学的研究水平,也起着带头的作用。 在研究造岩矿物的多种方法中,X射线粉末法占有十分重要的地位。这种方法既比较普及易行,又能较深入地解决造岩矿物一系列问题。有关这方面的研究方兴未艾。因此,孙以谏同志这本文集的出版,必将引起同志们的广泛注意。 作者在第一篇文章中,介绍了他多年独立研究提出的用粉晶法求低对称晶胞参数的原理和方法。这对正确地利用X射线粉晶数据是十分必要的。
In recent years, the research of rock-forming minerals has made great progress both in breadth and depth. This not only deepens the understanding of the rock-forming minerals themselves, but also plays a leading role in raising the level of research in the entire mineralogy. X-ray powder method plays a very important role in many methods of studying rock-forming minerals. This method is more universal and easier to solve, but also can solve a series of problems of rock-forming minerals in-depth. Research in this area is in the ascendant. Therefore, the publication of this collection by Comrade Sun Yijian will surely attract the attention of comrades. In the first article, the author introduces the principle and method of using powdery crystallization method for low symmetry unit cell proposed by his independent research for many years. This is necessary for proper use of X-ray powder data.