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A supposed new metallic element. It is said to have been discovered in pyrites, and some other minerals, and to be of a silver-white color, and malleable.

A tin-white arsenide of iron, isomorphous with arsenopyrite.

Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America.

gions of the earth at which the direction of the dipping needle is vertical. -- Magnetic pyrites. See Pyrrhotite. -- Magnetic storm (Terrestrial Physics), a disturbance of the earth's magnetic force characterized by great and sudden changes. -- Magnetic telegraph, a telegraph acting by means of a magnet. See Telegra…

A sulphide of iron resembling pyrite or common iron pyrites in composition, but differing in form; white iron pyrites. Golden marcasite, tin. [Obs.]

te capillary crystals, also in incrustations of a bronze yellow; -- sometimes called hair pyrites.

Arsenical iron pyrites; arsenopyrite.

Iron pyrites, or arsenical pyrites; -- so called by the Cornish miners.

sulphide containing more sulphur than some other compound of the same elements; as, iron pyrites is a persulphide; -- formerly called persulphuret.

Of or pertaining to pyrites. See Pyritic.

Of or pertaining to pyrites; consisting of, or resembling, pyrites.

Containing or producing pyrites.

To convert into pyrites.

Like pyrites in hemihedral form.

The pentagonal dodecahedron, a common form of pyrite.

lphide of iron, and is remarkable for being attracted by the magnet. Called also magnetic pyrites.

Containing, or impregnated with, selenium; as, seleniferous pyrites.

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 octohedral s…

A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.…

dig in tin mines. [Obs.] Bailey. -- Tin plate, thin sheet iron coated with tin. -- Tin pyrites. See Stannite.