WHITE-PYRITE, WHITE-PYRITES, noun [white and pyrite.] An ore of a tin-white color, passing into a brass-yellow and steel-gray, occurring in octahedral crystals, sometimes stalactitical and botryoidal. It contains 46 parts of iron, and 54 of sulphur.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI