Dolomite Lime is a rock, it is calcium magnesium carbonate, CaMg(CO3)2. Which has about 50% calcium carbonate and 40% magnesium carbonate, giving approximately 22% calcium and at least 11% magnesium. Dolomite Lime adjusts soil pH of excessively acid soils so plants can get the most from nutrients present because lime and dolomite are alkaline, they help to raise the soil’s pH back to a level that is conducive to growing plants. Magnesium is an essential mineral for healthy soil. Dolomite Lime often comes in pellet form for easy application, and a slow release into your soil, but make sure you really need it since oversaturating your soil with certain minerals can be toxic to crops.