https://doi.org/10.1351/goldbook.G02640
A @S05531@ in which a supercooled melt yields, on cooling, a glassy structure. Below the @G02641@ the physical properties vary in a manner similar to those of the crystalline phase. Example: Lithium disilicate crystals melt at \(1305\ \text{K}\); the melt can be supercooled to the @G02641@ at approximately \(773\ \text{K}\) below which the viscous liquid freezes to a rigid amorphous glass.