The sphalerite structure is favored at 298k by 13kJ/mol, but at 1296K the transition to wurtzite occurs.3 Mining was unmechanized and labor-intensive, with pickmen releasing the ore from your rock, and mine-boys or carusi carrying baskets of ore to the floor, usually through a mile or even more of tunnels. https://infraredzincsulfide97406.aioblogs.com/81801533/a-secret-weapon-for-infrared-zinc-sulfide