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:
“Would it not be worth while to discover nature in Milton? be native to the universe? I, too, love Concord best, but I am glad when I discover, in oceans and wildernesses far away, the material of a million Concords: indeed, I am lost, unless I discover them.”
—Henry David Thoreau (1817–1862)
“For, though the origin of most of our words is forgotten, each word was at first a stroke of genius, and obtained currency, because for the moment it symbolized the world to the first speaker and to the hearer. The etymologist finds the deadest word to have been once a brilliant picture.”
—Ralph Waldo Emerson (1803–1882)
“... the man in the violent situation reveals those qualities least dispensable in his personality, those qualities which are all he will have to take into eternity with him.”
—Flannery O’Connor (1925–1964)