Abstract: For the purpose of understanding the spectra characteristics and color-causing mechanism of the hemimorphite found in the oxidation zones of Jinding Pb-Zn deposits, 5 techniques were applied to analyse this mineral： wet chemical analysis, IR, LRM, XRD and EMPA. The complete chemical compositions of the mineral were obtained and large emphasis was put on the possible color causing elements, such as Cu, Fe and Ni. The white and blue hemimorphite samples were tested by XRD and IR to reveal if there are other minerals intermingled with hemimorphite. At the same time, the cell parameters were calculated. The average cell parameters are a = 0. 8372nm, b = 1. 0702nm, and c =0.5116nm. The absorption bands of crystal structure in the range of infrared spectra （180 -452 cm^-1） were obtained, which were not reported before. Meanwhile, the structure, the structure water and crystal water were studied through infrared spectra. The peaks and absorption bands of infrared and Raman spectra were assigned. Generally, partial substitutions of Cu^2＋ for Zn^2＋ may cause the blue color of the hemimorphite. In addition, the blue and white hemimorphites share the same crystal structure based on XRD, IR and LRM. The glass luster and dust luster of the hemimophite are related with the large amount of crystal water in it.