Dolomite
What is Dolomite?
Dolomite is a sedimentary rock composed of calcium magnesium carbonate – CaMg(CO₃)â‚‚.
It usually appears white, gray, or pink and is similar to limestone, but contains more magnesium.
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How is it Extracted?
Dolomite is typically extracted through open-pit mining in large blocks.
After extraction, the material is crushed, screened, and ground into different particle sizes.
For high-purity applications, beneficiation and washing processes may also be applied.
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Available Sizes
Dolomite is produced in various sizes depending on the end-use:
Crushed stone / aggregate: 5–60 mm
Dolomite powder: 0–1 mm or micronized powder
Block stone: Large cut blocks for construction or decorative use
Industries & Applications
Dolomite is a versatile raw material used in multiple industries:
Steel industry: As a flux in blast furnaces
Glass production: Improves strength and transparency
Agriculture: Used as dolomitic lime to neutralize soil acidity
Chemical industry: Source of magnesium oxide (MgO)
Construction: Road base, concrete aggregate, decorative stone
Ceramics & refractories: Heat-resistant material production
Tuna Mining
About Tuna Mining
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​For almost a half century, we have been producing high quality snowy white dolomite in Badalan Region, Marmara Island, Balikesir on 200 hectar area for glass, iron and steel, ceramics, construction, paint and landscaping.
We size the dolomite stones we produced in our facility and organize logistic services in regard to the demand of our costumers.
We produce more than 250 thousand tons per year in our crushing, screening and micronizing plants established in a 3000 square meter closed area.
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Our mission and values
We continue our mining with the aim of meeting customer demands on time, with sustainable quality and economically, by using natural resources efficiently.
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​Our Products
2-4 mm Dolomite
4-8 mm Dolomite
8-12 mm Dolomite
12-18 mm Dolomite
18-40 mm Dolomite​​​
