It contains Calcium Carbonate and Magnesium Carbonate. It is used for de-acidifying and fertilizing acidic soils, with a poor content of minerals. It is recommended for use in all types of soil. Thus it plays a double role: it de-acidifies the soil and enhances the amount of magnesium and calcium contained in the soil. It also provides a range of other elements and micro-elements that influence favourably the plants vegetation and yielding.