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us silicate of magnesia. Steatite, or soapstone, is a compact granular variety. Indurated talc, an impure, slaty talc, with a nearly compact texture, and greater hardness than common talc; -- called also talc slate.

Of or pertaining to talc; composed of, or resembling, talc.

Same as Talc.

A white, pearly mineral, occurring thin and foliated, like talc, and also fibrous; a native magnesium hydrate.

iniing pale greenish zones. It consists of calcium carbonate, with zones and cloudings of talc.

t (Arch.) See French window, under Window. -- French chalk (Min.), a variety of granular talc; -- used for drawing lines on cloth, etc. See under Chalk. -- French cowslip (Bot.) The Primula Auricula. See Bear's-ear. -- French fake (Naut.), a mode of coiling a rope by running it backward and forward in parallel bends…

another, or be itself scratched;-measured among minerals on a scale of which diamond and talc form the extremes.

a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Specific gravity, 1.75. Magnesium sulphate. (Chem.) Same as Epsom salts.

A kind of granite or gneiss containing a silvery talcose mineral.

A soft, compact variety of talc,, being an altered pyroxene. It is often worked in a lathe into inkstands and other articles.

See Steatite, and Talc.

A massive variety of talc, of a grayish green or brown color. It forms extensive beds, and is quarried for fireplaces and for coarse utensils. Called also potstone, lard stone, and soapstone.