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A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color.

A bronze-colored mineral, of metallic luster. It is a sulphide of iron, and is remarkable for being attracted by the magnet. Called also magnetic pyrites.

Arsenic sulphide, a mineral of a brilliant red color; red orpiment. It is also an artificial product.

A mixtire of caustic lime and orpiment, or tersulphide of arsenic, -- used in the depilation of hides. Knight.

an elastic durable variety of vulcanized caoutchouc of a red color. It contains antimony sulphide as an important constituent. -- Hard rubber, a kind of vulcanized caoutchouc which nearly resembles horn in texture, rigidity, etc. -- India rubber, caoutchouc. See Caoutchouc. -- Rubber cloth, cloth covered with caout…

bstance of a red color and a variable composition, but always consisting chiefly of the disulphide of arsenic; -- called also ruby sulphur. -- Ruby of zinc (Min.), zinc sulphide; the mineral zinc blende or sphalerite. -- Ruby silver (Min.), red silver. See under Red.

Realgar; red sulphide of arsenic. [Archaic]

's salts. -- Soda waste, the waste material, consisting chiefly of calcium hydroxide and sulphide, which accumulates as a useless residue or side product in the ordinary Leblanc process of soda manufacture; -- called also alkali waste. -- Soda water, originally, a beverage consisting of a weak solution of sodium bica…

ubstances, as the diamond, siulphide of barium (Bolognese or Bologna phosphorus), calcium sulphide, etc., which become phosphorescent, and shine in the dark, after exposure to sunlight or other intense light. -- Solar plexus (Anat.), a nervous plexus situated in the dorsal and anterior part of the abdomen, consisting…

Zinc sulphide; -- called also blende, black-jack, false galena, etc. See Blende (a).

A sulphide of antimony and silver of an iron-black color and metallic luster; called also black silver, and brittle silver ore.

A sulphide of silver and iron, occurring in soft flexible laminæ varying in color from brown to black.

eral of a lead-gray color and brilliant metallic luster, occurring in prismatic crystals; sulphide of antimony; -- called also antimony glance, and gray antimony.

A steel-gray mineral of metallic luster. It is a sulphide of silver and copper.

is prefixed,is present in only a small proportion, or less than the normal amount; as, subsulphide, suboxide, etc. Prefixed to the name of a salt it is equivalent to basic; as, subacetate or basic acetate. [Obsoles.]

A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out. Symbol S. Atomic weight 32. The specific gravity of ordinary…

A sulphide; as, a sulphuret of potassium. [Obsoles.]

hur; sulphurized. [Written also sulphuretted.] Sulphureted hydrogen. (Chem.) See Hydrogen sulphide, under Hydrogen.

Having the characteristic odor of sulphur dioxide, or of hydrogen sulphide, or of other sulphur compounds. Sulphurous acid. (a) Sulphur dioxide. See under Sulphur. [Obs.] (b) An acid, H2SO3, not known in the free state except as a solution of sulphur dioxide in water, but forming a well-known series of salts (the sulph…

ogous to a hydrate, regarded as a salt of sulphydric acid, or as a derivative of hydrogen sulphide in which one half of the hydrogen is replaced by a base (as potassium sulphydrate, KSH), or as a hydrate in which the oxygen has been wholly or partially replaced by sulphur.