(04.01 HC) What type of rock is marble? Describe how a piece of marble is likely to change over several years.

Marble is a Metamorphic rock

Over time rain, pollutants, and acidic materials break down a material contained in marble which is called calcite. When the calcite dissolves, it results in the marble crumbling/breaking down.

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Explanation:

Marble is a type of rock that has been recrystallized under the influence of heat, pressure, and aqueous solutions. Marble is classified as a metamorphic stone because it is created by the transformation of another type of stone, which is called sedimentary stone.

Acid rain affects stone primarily in two ways: dissolution and alteration. When sulfurous, sulfuric, and nitric acids in polluted air react with the calcite in marble, the calcite dissolves. Eventually the black crusts blister and spall off, revealing crumbling stone.