Fig. 1. (a) The front photograph of the sample; (b) The back photograph of the sample; (c), (d) The local enlarged photographs of the sample; (e), (f) Microscopic photographs, showing metallic luster on the surface of impurity minerals

Fig. 2. (a), (b), (c) are actual testing points of ICP

Fig. 3. Composition test results of inclusion minerals

Fig. 4. (a), (b) backscattered images; (c) EPMA test point; (e), (f) EDS analyses

Fig. 5. Raman spectra (BX06-1 and BX06-2) of darkgray inclusion minerals with selenium and krutaite cited from RRUFF