Dolomite: A Carbonate Rock With Unique Geological Properties
Dolomite is a carbonate rock that forms when magnesium rich groundwater interacts with limestone or calcite sediment over thousands of years. Through a hydrothermal alteration process, calcium in the original carbonate rock is slowly replaced by magnesium. The resulting dolomite rock has a distinct chemical composition consisting of calcium magnesium carbonate . This substitution of magnesium for calcium is what gives dolomite its distinct crystal structure and properties compared to Limestone.
Dolomite has a characteristic pale-white color and makeup of fine to coarse grains. It has a Mohs hardness rating of 3.5-4 that makes it slightly harder than ordinary limestone. Dolomite often forms massive beds and may display crystal twinning patterns when seen under a microscope. On exposed rock faces, it frequently weathers to form characteristic rhombohedral shapes and pitting. Dolomite possesses good chemical resistance to mild acids but dissolves slowly in hydrochloric or other stronger acids with effervescence of carbon dioxide bubbles.
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Dolomite is a carbonate rock that forms when magnesium rich groundwater interacts with limestone or calcite sediment over thousands of years. Through a hydrothermal alteration process, calcium in the original carbonate rock is slowly replaced by magnesium. The resulting dolomite rock has a distinct chemical composition consisting of calcium magnesium carbonate . This substitution of magnesium for calcium is what gives dolomite its distinct crystal structure and properties compared to Limestone.
Dolomite has a characteristic pale-white color and makeup of fine to coarse grains. It has a Mohs hardness rating of 3.5-4 that makes it slightly harder than ordinary limestone. Dolomite often forms massive beds and may display crystal twinning patterns when seen under a microscope. On exposed rock faces, it frequently weathers to form characteristic rhombohedral shapes and pitting. Dolomite possesses good chemical resistance to mild acids but dissolves slowly in hydrochloric or other stronger acids with effervescence of carbon dioxide bubbles.
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Dolomite: Formation, Properties, Uses & Environmental I...
Formation and distribution of dolomiteDolomite is a carbonate mineral formed when limestone recrystallizes due to magnesium-rich fluids present underground. This process of minera
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06:20 AM - Apr 17, 2025 (UTC)
