În lucrare se reflectă structura geologică a zăcământului de argile bentonitice „Prodăneşti” rezervele, proprietăţile fizico-chimice după modificarea lor şi domeniile de utilizare în economie.

For Moldova the mineral and stock basis of bentonite is mainly presented by alkaline earth alkaline and like clay bentonites. The balance resources of bentonite are 5936.5 thousands fons for 2008 year. Powder bentonite industry is still not supported in our country and that is why about 600 – 700 tons are imported from Newly Independent Countries, France, Germany, Italy, Romania, China and other countries. Alkaline (with sodium) bentonite are most qualitative and such type is absent in Moldova. In similar situation in order to modify the quality of alkaline – earth bentonite clay the volume of exploration geology need to be increased and new effective technologies should be developed. In this publication as the results of mechanical activation the changes of physical – chemical and rheology proprieties of monomineral clay from Prodanesti deposit are studied. Using instrumental methods conversion of alkaline – earth bentonite to alkaline is shown.