How dolomite rock is quarried
Dolomite rock is a limestone that magnesium moved into, and it barely fizzes in acid.
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The short version
Dolomite is a sedimentary rock made mostly of calcium magnesium carbonate. Most of it began as limestone that magnesium-rich water later changed, so quarries find it next to limestone. Crews quarry the bed, crush it and screen it. Magnesium smelters are among the buyers.
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Find a dolomitized bed
Most dolomite formed when magnesium replaced calcium in limestone or lime mud. Geologists check a field sample with a drop of dilute acid, because dolomite fizzes only weakly while limestone fizzes hard.
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Blast and quarry the rock
The rock is soft, rated 4 or less on the Mohs scale, and resists erosion. Crews take it from open quarries.
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Crush and size the stone
Quarried rock is crushed and screened into sizes for each customer. One of its destinations is a magnesium smelter.
Worth repeating
- Dolomite makes up about 80 percent of the carbonate rock that holds petroleum.
- Dolomite is named after Déodat Gratet de Dolomieu, who described the rock in 1791 after noticing it in the buildings of old Rome.
Where it goes next
Dolomite feeds 2 lines directly and reaches 166 things in total.
Further down the line
Keep walking
Sources
Cite this page: "How dolomite rock is quarried." Assembly Line, 2026-11-03. https://assemblyline.org/make/dolomite