Objective: To analyze and identify six white crystal mineral Chinese medicines by using morphological identification and X-Ray diffraction(XRD) technique. Method: In the experiment

15 batches of samples including Alumen

Borax

Halite

Natrii Sulfas

Autumn Mineral and Sal-Ammoniae were collected for XRD patterns. The phase identifying was conducted for the patterns; phase compositions of the samples were analyzed; the characteristics of the samples patterns were analyzed and compared with property characteristics. Result: Six Chinese medicines were similar in properties

because all of them were transparent or white translucent crystal

with glass like luster and a hard and brittle texture; but with little differences in shape

color and transparency. XRD patterns of these 6 mineral medicines showed intuitive differences

which could be reflected in number of peaks

strong peaks positions and peak shape

etc. Cluster analysis results of these 15 batches of herbs showed that 6 white crystal mineral Chinese medicines can be distinguished by cluster analysis. Conclusion: The combining method of X-ray diffraction analysis and morphological identification could be used for the quick and effective identification of six white crystal mineral Chinese medicines:Alumen

Borax

Halite

Natrii Sulfas

Autumn Mineral and Sal-Ammoniae.