Objective: Study on HgS content

species and crystal construct of cinnabar. Comparation of cinnabar from its confusable varieties. Method: The cinnabar were identified by macroscopic

microscopic observation

physical and chemical testing. It supplied the bases for identifying the cinnabar. The structure and paticle diameter of cinnabar were investigated with XRD and SEM. HgS contents of cinnabar was determined by volumetric analysis。 Result: Cinnabar from its confusable varieties were identified By difference of macroscopic

microscopic observation

physical and chemical. The cinnabar have two polymorphism(α-HgS and β-HgS). The XRD spectra of HgS nano-powders collected in the different habitats were very consistent with each other. Conclusion: The property of cinnabar have a close relationship with HgS contents and states and crystal shape. It is a main influencing factors of evaluation of cinnabar’ quality.