what property of Metamorphic rock make therefit to be used for building
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Metamorphic rocks are hard which makes them durable. The mineral grains are tightly packed by heat and pressure. The grains are melted to gather by this process. There isn't any space between the grains to cause weakness or allow water to penetrate the rock. If water got into the rock it would cause chemical weathering and create the possibility of freezing and mechanical failure.
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