Definition: Trachydolerite is a mineral that is found in several different types of rocks. It is named after Trachy, which is a Greek word meaning "large" or "fat," and dolerites, which are thin layers of quartz. Trachydolerite is composed primarily of two minerals, dolomite and calcium carbonate, and it forms when the heat from above the Earth's surface causes the formation of water in the rock. Trachydolerite can be found in
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