A metamorphic rock formed by alteration of limestone or dolomite, often irregularly colored by impurities, and used especially in architecture and sculpture.
大理石由石灰岩或白云岩变化而来的一种变质岩，常有不规则的杂质色块，专门用于建筑和雕塑。
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Lack of oxygen inhibited decay, and heat and pressure over millennia turned the wood into solid quartz colored by impurities like iron, carbon, and manganese.