The evaporite minerals form the evaporite rocks and deposits. The major part has been deposited from evaporation of water in ancient restricted oceans. The evaporite deposits found in geological records today are of great interest to the mining industry, such as in potassium production in carnallite and sylvite mines, and oil exploration, either as source rock, reservoir, seal or structuring element of the petroleum system. In this dissertation samples of Aptian saline evaporite age from the Sergipe-Alagoas Basin, obtained in the only potash mine in operation in Brazil, currently developed by Vale S.A. were analyzed. A methodology for mineral and volume characterization for this type of material based on macroscopic description, thin section analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray microtomography, natural radioactivity analysis and helium porosimetry is proposed on this work. Following this characterization, ultrasonic pulse propagation tests and triaxial compression tests were made in order to determine the dynamic and static elastic moduli of the material, respectively, the main objective of this dissertation. At the end we compare the dynamic results (ultrasonic tests) with static results (triaxial tests) relating them to the mineralogical and volumetric characterization made earlier. These elastic modulus, such Young s modulus, are very important in petroleum engineering, drilling, mining and geophysics.