fornacite

Meaning

Noun

• A rare monoclinic-prismatic lead copper chromate arsenate hydroxide mineral, which is generally green to yellow and translucent to transparent, and has a Mohs hardness of 2.3, a specific gravity of 6.27, and a Strunz classification of 7.FC.10.

Origin

• From Latin fornāx ("furnace") , named in 1915 after Lucien Lewis Forneau (whose surname resembles French fourneau ("stove"), which, like fornāx, is ultimately from Latin furnus ("oven")).