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Talc-a metamorphic mineral is used as a lubricant. Serpentine is used for carving. Corundum, another metamorphic mineral, is used for abrasives. Kyanite and its polymorphs-for ceramics. Graphite-pencils. Many economic deposits of gold, copper, tungsten and iron occur in metamorphic rocks.arble is a metamorphic rock that is used to make floor tiles, counter tops and it is carved int â¦ o statues and was used extensively in the building of the Roman Colosseum and other historic buildings.
Even with their new mineral assemblages, metamorphic rocks may have the same overall chemistry they had before metamorphism. Fluids are an important agent of metamorphism. Most rocks contain some water, but sedimentary rocks hold the most. First there is the water that was trapped in the sediment as it became rock.Second is the water that is liberated by clay minerals as they change back to feldspar and mica.y Andrew Alden. Metamorphic rocks are the third great class of rocks. These are what happens when sedimentary and igneous rocks become changed, or metamorphosed (changed in form), by conditions underground. The four main agents that metamorphose rocks are heat, pressure, fluids and strain.