Orthorhombic Jahn-Teller distortion and Si-OH in mozartite...
The O-H ⋯ O distance of <2.5 Å in mozartite is one of the shortest hydrogen bonded O⋯O distances in minerals and leads to a diffuse FTIR absorption peak (stretching mode) polarized parallel to b between 1300 and 1700 cm-1....