Abstract: The present invention relates to zeolithic materials having a characteristic X ray diffraction pattern, and its preparation method, characterized by the relatively low pH of the synthesis medium and the use of F− anions as mineralizing agent. The invention also claims the use of the obtained material in catalytic processes for the transformation of hydrocarbons and in oxidation process. The method comprises heating at 363-473° K a reaction mixture which contains a source of at least one tetravalent element T(IV), optionally a source of an element T(III), optionally H2O2, a structure director organic cation, a source of anions F− and water, the presence of alkaline cations is not necessary.