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:
“Any so-called material thing that you want is merely a symbol: you want it not for itself, but because it will content your spirit for the moment.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“Someone had literally run to earth
In an old cellar hole in a byroad
The origin of all the family there.
Thence they were sprung, so numerous a tribe
That now not all the houses left in town
Made shift to shelter them without the help
Of here and there a tent in grove and orchard.”
—Robert Frost (1874–1963)
“I am your anointed Queen. I will never be by violence constrained to do anything. I thank God I am endued with such qualities that if I were turned out of the Realm in my petticoat I were able to live in any place in Christendom.”
—Elizabeth I (1533–1603)