Fizélyte
Hardness: 2 Color: steel-gray, lead-gray Formula: Ag5Pb14Sb21S48 Crystal system: monoclinic The name of fizélyite was given by József Krenner in 1923 after its explorer Sándor Fizély, the Hungarian mine senator of Felsőbánya (today Baia Sprie, Slovakia). The mineral has been already explored in the mine Herzsabánya (today Herja, Romania) at the vein called Makávé but...