Material Origin and Qualities
Marble is a metamorphic rock derived from limestone, composed mostly of calcite (a crystalline form of calcium carbonate, CaCO3). The original source of the parent limestone is the seabed deposition calcium carbonate in the form of microscopic animal skeletons or similar materials. Marble is formed when the limestone is transformed by heat and pressure after being overlain by other materials. The finest marbles for sculpture have no or few stains (some natural stain can be seen in the sculpture shown at left, which the sculptor has skillfully incorporated into the sculpture).
Read more about this topic: Marble Sculpture
Famous quotes containing the words material, origin and/or qualities:
“This country is at present engaged in furnishing material for future authors; not in encouraging its living ones.”
—Herman Melville (1819–1891)
“Art is good when it springs from necessity. This kind of origin is the guarantee of its value; there is no other.”
—Neal Cassady (1926–1968)
“I should say tact was worth much more than wealth as a road to leadership.... I mean that subtle apprehension which teaches a person how to do and say the right thing at the right time. It coexists with very ordinary qualities, and yet many great geniuses are without it. Of all human qualities I consider it the most convenient—not always the highest; yet I would rather have it than many more shining qualities.”
—M. E. W. Sherwood (1826–1903)