Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Dolomite

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_529

Dolomite is a carbonate rock composed mainly of CaMg(CO3)2and forms in the unique depositional environments or though the dolomitization process. It is usually greyish white and has a low hardness. It appears similar to limestone but does not fizz or only fizzes slightly in diluted hydrochloric acid. Weathered surfaces often contain dolomite powder and have a cross knife-cut pattern. Based on the stages of formation, dolomite can be divided into contemporaneous dolomite, diagenetic dolomite and secondary dolomite. Based on the structure, it can be divided into micritic dolomite, micro-crystalline dolomite, crystalline dolomite, residual allochemical dolomite and clastic dolomite. Dolomite has a high magnesium content, and it is used in the chemical industry to manufacture fused calcium-magnesium phosphate fertilizer, granular fertilizer and magnesium sulphate. In metallurgical industries, it can be used as a flux and refractory material, and some dolomites can be used for the...

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