反射率是金属矿物的一种重要光学常数,它对研究和鉴定不透明矿物都有重要的意义。最初对反射率的测定是用目测对比法,即首先选定某几种矿物(如方铅矿、闪锌物、黄铁矿)作为比较的对象,将待测矿物与其对比,粗略地定出其反射率之范围。后来就出现了各种目测光度计和光电池,并用白光和单色光(红、橙、绿)进行测定,但这些方 Reflectance is an important optical constant of metal minerals, which is of great significance for the study and identification of opaque minerals. The initial determination of the reflectivity is the visual contrast method, that is, first selected a number of minerals (such as galena, shining zinc, pyrite) as the object of comparison, compared with the measured minerals, roughly set The range of its reflectivity. Later appeared a variety of visual photometers and photovoltaic cells, and with white and monochromatic light (red, orange, green) for the determination, but these parties