The objective of this study is to show the development of crystalline, glassy and gassy phases, as well as some ceramic properties of porous ceramic materials Formation of porous ceramics was performed from mixed powder compositions – synthetic materials MgO, γ Al2O3, K2CO3 and mineral raw materials of Latvia (limestone, dolomite, illite clay from three different clay beds and quartz sand). The mutual relations of raw materials was chosen accordingly on the development of high - temperature crystalline phases in ceramic materials sintered in temperature ranged from 1320 to 13400C. Acquired porous ceramic materials was characterized by bulk density, expansion of dimensions of samples, porosity and crystalline phases composition. It is shown that after sintering there is formed porous ceramic materials structured from high -temperature crystalline phases - spinel (MgAl2O4), and quartz (SiO2), glassy and gassy-form phases. The linear measure of sintered samples increases for 6-7%. By increasing of limestone in starting mixture are formed also anorthite Ca[AlSiO4]2 as well as porous phase grows. There are obtained ceramics with dominant large dimensions pores ranged from 0, 1 to 10 μm and pores 10 to 1000 μm. Total porosity and glassy phase grows with increasing of sintering temperature. Ceramics is characterized by bulk density ranged from 0.96 to 1.27 g/cm3, which is dependent on sintering temperature and relations of used mineral raw materials, in particular, kind of used elite clay and limestone.