[Raman spectroscopic study of Ming Dynasty bar-tile from Heijing of Lufeng].

Ming dynasty bar-tile from the archaeological site of Heijing (Lufeng of Yunnan Province, China) was analyzed by Raman microscopy, X-ray diffraction and electron probe microscopy (EPMA). It was found that the major components of the tile are SiO2, besides moonstone(KAlSi3O8 var. of K-orthoclase), Na-orthoclase(NaAlSi3 O8 )and an unknown mineral (Al, Fe)3(PO4,VO4)2(OH)3.