Mannardite was discovered in China in 1981.but due to the valence state of Ti, the authors could not submit to the commission on new minerals and new mineral name,IMA earlier. Chemical,physical properties, X-ray powder diffraction and space group, unit cell constants are all the more or less iden- tical with those of mannardits. But there are differences in occurence and mi- neral association. For other minor differences one can find in the comparison table (table 2).