又称云石，是重结晶的石灰岩，主要成分是CaCO₃。石灰岩在高温高压下变软，并在所含矿物质发生变化时重新结晶形成大理石
Also called marble, recrystallization is limestone, main component optimization is Limestone at high temperature is high
Under pressure to soften and in mineral changes to form marble crystallization
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