Method for establishing X-ray powder diffraction Fourier fingerprint spectrum of limonite, standard fingerprint spectrum and application of X-ray powder diffraction Fourier fingerprint spectrum

Aiming at the defects of a conventional limonite mass control techniques, the invention provides a method for establishing an XRDFourier standard fingerprint spectrum of limonite. The method specifically comprises the following steps: performing X-ray powder diffraction scanning on 18 different batches of samples to obtain an XRDFourier spectrum, screening the batches with relatively large deviation, overlapping and averaging geometric topology graphs of the sample spectrum through Origin8, establishing an XRDFourier reference fingerprint spectrum of limonite, performing peak searching treatment by using MidJade5, screening 13 shared characteristic peaks with relatively large strength, and finally calculating the similarity, wherein the similarity of the samples of different batches is good, various calculation methods have no remarkable difference, thus establishing the XRDFourier standard fingerprint spectrum of limonite. Meanwhile, the invention further provides the XRDFourier standard fingerprint spectrum of limonite established by using the method, and an application method of the spectrum. Due to adoption of the fingerprint spectrum provided by the invention, scientific reference is provided for specimen identification and quality evaluation on a limonite medical material. Besides, main component analysis shows that quartz and alkali ferric oxide are main minerals of limonite.