Ross, Nancy L.Detrie, Therese A.Liu, Zhenxian2020-04-152020-04-152020-03-31Ross, N.L.; Detrie, T.A.; Liu, Z. High-Pressure Raman and Infrared Spectroscopic Study of Prehnite. Minerals 2020, 10, 312.http://hdl.handle.net/10919/97620High-pressure Raman and infrared spectra of a natural sample of prehnite, with a chemical composition of Ca₂(Al_0.74,Fe_0.26)₂Si₃O₁₀(OH)₂, are presented. Analyses of the spectra indicate that prehnite undergoes a reversible structural change between 6 and 8 GPa that is most likely associated with a subtle alteration in the orientation and/or deformation of the polyhedra comprising the framework of the structure. At pressures in excess of ~11 GPa, the high-pressure spectra indicate that prehnite undergoes a reversible phase transition involving the collapse of the framework structure.application/pdfenCreative Commons Attribution 4.0 Internationalprehniteinfrared spectroscopyRaman spectroscopyhigh pressurephase transitionArticle - Refereed2020-04-15https://doi.org/10.3390/min10040312