The sphalerite framework is favored at 298k by 13kJ/mol, but at 1296K the transition to wurtzite occurs.three Mining was unmechanized and labor-intensive, with pickmen freeing the ore with the rock, and mine-boys or carusi carrying baskets of ore to your floor, typically via a mile or even more of tunnels. https://travisjkihe.blog-gold.com/32922758/the-basic-principles-of-zinc-sulfide