Adding MgO in the production process lowers the melting degree and increases the glass hardness. The dolomite should have:
MgO > 19.5 %
CaO > 29%
Fe2O3  < 0.1%

For that, dolomitic powder of 100-250 microns is used.

Marble powder forms about 30-40 % of the paints components. It is preferred to calcium carbonate in the production process of paints, as it is used as filler to enhance the physical properties of paints. Higher levels of thermal resistance, viscosity, oil absorption and hardness are achieved. Paints normally use a size of 20 microns powder while textured paints use 0.3-1.5 mm powders.

Marble powder is an essential component indifferent applications as:

• Plastic pipes
• Electricity cables
• Automotive parts
• House hold plastics

As it improves flexural modulus (stiffness), increases heat stability, reduces the coefficient of thermal expansion, and increases the heat deflection.

It also enables excellent surface finishing, improved scratch and mar resistance, and can allow increased molding production rates by promoting nucleation and improved heat transfer.

Sizes of the powder used in this industry is typically between 2-10 microns.

Marble powder is an essential component in carpet fibers and is mixed with latex (up to 30%) to make carpet layers adhesive which reduces costs and increases durability.

Marble powder enhances the properties of foods as bread, sweets and is used as calcium supplement, tooth pasts, medicines.

Marble powder is used as a filler in in poultry of chickens and cattle, and also used in manufacturing fertilizers as calcium nitrates.

Dolomitic marble powder is added in sizes of 0.3-1.5 mm with bentonite in drilling muds to increase density and as a  casing and crack filler.