Dolomitic Limestone Chemical Formula: What You Need To Know

Dolomite Powder


If you’re in the construction or agricultural industry, you’re probably familiar with dolomitic limestone. This mineral is widely used as a soil amendment and construction material due to its unique chemical properties. In this article, we’ll explore the chemical formula of dolomitic limestone and its uses.

What is Dolomitic Limestone?

Dolomitic limestone is a sedimentary rock composed of calcium magnesium carbonate (CaMg(CO3)2). It is formed from the accumulation of marine debris and is commonly found in limestone deposits.

Chemical Formula of Dolomitic Limestone

The chemical formula of dolomitic limestone is CaMg(CO3)2, which means it contains calcium (Ca), magnesium (Mg), and carbonate (CO3) ions.

Properties of Dolomitic Limestone

Dolomitic limestone is a white to grayish-white rock with a granular texture. It has a Mohs hardness of 3.5-4 and a specific gravity of 2.8-2.9. Its chemical properties make it slightly alkaline, which is beneficial for neutralizing acidic soils.

Uses of Dolomitic Limestone

Dolomitic limestone has a wide range of applications due to its unique properties. Here are some of its common uses:

Soil Amendment

Dolomitic limestone is commonly used as a soil amendment to neutralize acidic soils. The calcium and magnesium ions in the mineral react with the hydrogen ions in the soil, increasing the pH level and making it more alkaline. This helps improve soil fertility and plant growth.

Construction Material

Dolomitic limestone is also used as a construction material due to its durability and resistance to weathering. It is commonly used as a building stone, aggregate, and decorative stone.

Water Treatment

Dolomitic limestone is used in water treatment to remove impurities such as heavy metals and organic matter. The mineral reacts with the impurities, forming insoluble compounds that can be easily removed from the water.


Dolomitic limestone is a versatile mineral with many uses in the construction and agricultural industries. Its chemical formula, CaMg(CO3)2, contains calcium, magnesium, and carbonate ions, which make it beneficial for neutralizing acidic soils, as a construction material, and in water treatment. If you’re looking for a natural and effective way to improve your soil or construction project, dolomitic limestone may be the solution you need.