While the FTIR and Raman spectrum can testfy the existence of [Si(OH)6] octahedron in thaumasite to distinguish the thaumasite and AFt. 2.

• 而FTIR和Raman波谱分析可证实thaumasite中[Si(OH)6]八面体基团的存在，而有效区分thaumasite和/或钙矾石晶体。