Method for building mineral standard color database

The invention discloses a method for building a mineral standard color database. The built mineral standard color database contains standard color data of various different types of minerals with known mineral components; and a scanning electron microscope with an energy spectrum analysis function and an image processing device are adopted for cooperatively acquiring standard color data of various minerals, and the standard color data of any one mineral is acquired through the following processes: 1. sample acquisition; 2. to-be-analyzed particle section; 3. plane scanning; 4. plane distribution and scanning of chemical elements; 5. image transmission; 6. image processing implemented through plane distributed image colorization, image stacking, to-be-analyzed area selection, and chromatic value calculation; and 7. repeated implementation of the steps 1-6 until the standard color data of various minerals is obtained. According to the method disclosed by the invention, the step is simple, the design reasonable, the implementation is easy, the required time is short, and the application effect is good, and the mineral compositions of soil bodies can be accurately identified simply and rapidly.