Salt glaze pottery is stoneware with a glaze of glossy, translucent and slightly orange-peel-like texture which was formed by throwing common salt into the kiln during the higher temperature part of the firing process. Sodium from the salt reacts with silica in the clay body to form a glassy coating of sodium silicate. The glaze may be colourless or may be coloured various shades of brown (from iron oxide), blue (from cobalt oxide), or purple (from manganese oxide).
Famous quotes containing the words salt and/or pottery:
“The indispensable ingredient of any game worth its salt is that the children themselves play it and, if not its sole authors, share in its creation. Watching TVs ersatz battles is not the same thing at all. Children act out their emotions, they dont talk them out and they dont watch them out. Their imagination and their muscles need each other.”
—Leontine Young (20th century)
“There is on the earth no institution which Friendship has established; it is not taught by any religion; no scripture contains its maxims. It has no temple, nor even a solitary column. There goes a rumor that the earth is inhabited, but the shipwrecked mariner has not seen a footprint on the shore. The hunter has found only fragments of pottery and the monuments of inhabitants.”
—Henry David Thoreau (18171862)