Portal:Minerals/Did you know/14

• ... that when the mineral paramelaconite (pictured) was first described, it was not recognized as a valid species?
• ... that Karl Hugo Strunz was the creator of the Nickel-Strunz classification?
• ... that Lapis Lacedaemonius, a volcanic rock known today only from a single source, has been used as decoration in places as far apart as London, Venice, and Palermo?