Pina Martínez, Carlos ManuelFernández Díaz, María LourdesLópez García, José ÁngelPrieto Rubio, Manuel2023-06-202023-06-2019950022-024810.1016/0022-0248(94)00963-5https://hdl.handle.net/20.500.14352/57120Isothermal crystallization in the system Na2SO4-Li2SO4-H20 was carried out at 50°C by "salting out" in a tetrametoxysilane (TMS) gel medium. Under these conditions the solid phases that can crystallize are Na2SO4, Li2SO4 . H20 and β-LiNaSO4, depending on the initial composition of the gel interstitial solution. When the initial [Na2SO4]/[Li2SO4] molar ratio in the interstitial solution is smaller than 1, first β-LiNaSO4 crystallizes and, subsequently, Li2SO4 • H20. The nucleation of Li2SO4 • H20 is always heterogeneous and occurs epitaxially on the surface of β-LiNaSO4 crystals. Occasionally, successive heterogenous nucleation events promote the development of intergrowth phenomena. In this paper a detailed study of both epitactic growth and crystal morphology is worked out. Finally, the observed epitaxial relationships are interpreted on the ground of structural considerations.engjournal articlehttps://doi.org/10.1016/0022-0248(94)00963-5open access548.5Crystal GrowthIsotermal crystallizationCristalografía (Geología)