Another Dumb, Stupid, Idiotic Quiz from VaccaD by VaccaD

Question 5

WHAT POPULAR NAME is given to the mineral known as iron (II) disulfide or iron pyrite? The latter name reflects its ability (which it does not share with a similarly named element) to reliably generate a spark upon striking steel, which led to its sometimes being used instead of flint to ignite the powder in early firearms.