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:
“When science is learned in love, and its powers are wielded by love, they will appear the supplements and continuations of the material creation.”
—Ralph Waldo Emerson (1803–1882)
“Good resolutions are useless attempts to interfere with scientific laws. Their origin is pure vanity. Their result is absolutely nil. They give us, now and then, some of those luxurious sterile emotions that have a certain charm for the weak.... They are simply cheques that men draw on a bank where they have no account.”
—Oscar Wilde (1854–1900)
“Man is by nature a pragmatic materialist, a mechanic, a lover of gadgets and gadgetry; and these are qualities that characterize the “establishment” which regulates modern society: pragmatism, materialism, mechanization, and gadgetry. Woman, on the other hand, is a practical idealist, a humanitarian with a strong sense of noblesse oblige, an altruist rather than a capitalist.”
—Elizabeth Gould Davis (b. 1910)