Hello. I was thinking about how to make elemental mercury from mercury sulfide. I find few methods (heating it up in air or with CaO), that involves gaseous mercury as the result, but I want to find one that will form liquid mercury instead. I don't want to deal with very toxic gases, because I don't have access to fume hood, and because I am not very sure about air-proofness of my equipment. I will be very thankful for any ideas.