自X射线在矿物学中广泛应用以来,很多造岩矿物的成份能够用X射线鉴定了。目前普遍使用的是衍射仪、大半径德拜相机或基尼叶相机,使用小半径相机的还很少。使用衍射仪和基化叶相机所需样品量都较多,用大半径德拜相机曝光时间长,往往要比小半径 Since X-ray has been widely used in mineralogy, many rock-forming minerals can be identified by X-ray. Currently widely used diffractometer, large-diameter Debye camera or the Gurney camera, the use of small radius camera is still very small. The use of diffractometer and leaf-based camera required more sample size, with a large radius Debye camera exposure for a long time, often than the small radius