Fire clay is a term applied to a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al2O3.2SiO2.2H2O) with or without free silica."
Read more about Fire Clay: Properties, Chemical Composition, Extraction
Famous quotes containing the words fire and/or clay:
“I thought I alone suffered,
but suffering is everywhere.
When I went on the housetop
I saw its fire in every home.”
—Farid (13th cent.)
“Protoplasm, simple or nucleated, is the formal basis of all life. It is the clay of the potter: which, bake it and paint it as he will, remains clay, separated by artifice, and not by nature from the commonest brick or sun-dried clod.”
—Thomas Henry Huxley (1825–1895)