- a very common brass-yellow mineral, iron disulfide, FeS2, with a metallic luster, burned to sulfur dioxide in the manufacture of sulfuric acid: chemically similar to marcasite, but crystallizing in the isometric system.
Origin of pyrite
Examples from the Web for pyritic
The “American process” or “Pyritic smelting” consists in the direct smelting of raw ores to matte in blast furnaces.
The pyritic ores of iron, including marcasite, pyrrhotite and mispickel, are often taken for gold by the inexperienced.The A B C of Mining
Charles A. Bramble
- a yellow mineral, found in igneous and metamorphic rocks and in veins. It is a source of sulphur and is used in the manufacture of sulphuric acid. Composition: iron sulphide. Formula: FeS 2 . Crystal structure: cubicAlso called: iron pyrites, pyrites Nontechnical name: fool's gold
Word Origin and History for pyritic
"metallic iron disulfide, fool's gold," 1550s, from Old French pyrite (12c.), from Latin pyrites, from Greek pyrites lithos "stone of fire, flint" (so called because it glitters), from pyrites "of or in fire," from pyr (genitive pyros) "fire" (see fire (n.)). Related: Pyritic.
- A silver to yellow, metallic, cubic mineral. Pyrite often crystallizes in cubes or octahedrons but also occurs as shapeless masses of grains. It occurs in most types of rocks, and is used as a source of iron and in making sulfur dioxide. It is a polymorph of marcasite. Because of its shiny look and often yellow color, it is sometimes mistaken for gold and for this reason is also called fool's gold. Chemical formula: FeS2.