Latin pyrītēsfrom Greek purītēs (lithos)fire (stone), flintfrompūrfirepaəwr̥ in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
Pyrites Sentence Examples
Lampadius, who obtained it by heating a mixture of charcoal and pyrites.
Ruthenium sulphides are obtained when the metal is warmed with pyrites and some borax, and the fused mass treated with hydrochloric acid first in the cold and then hot.
Galena occurs in veins in the Cambrian clay-slate, accompanied by copper and iron pyrites, zinc-blende, quartz, calcspar, iron-spar, &c.; also in beds or nests within sandstones and rudimentary limestones, and in a great many other geological formations.
The alum schists employed in the manufacture of alum are mixtures of iron pyrites, aluminium silicate and various bituminous substances, and are found in upper Bavaria, Bohemia, Belgium and Scotland.