"Mercury minerals in deposits in nature consist mainly of corderiote (Hg3S2CL2), livingstonite (HgSb4S7), montroydite (HgO), terlinguaite (Hg2OCL), HgS, calomel Hg2CL2,coloradoite HgTe, and teimannite HgSe."
January 1, 1970
https://en.wikiquote.org/wiki/Mercury_(element)