A few new misc metals have been added.  The three you can mine for are: Meteorite, Malchite, and Tin.  Meteorite smelted makes platinum nuggets, which make platinum ingots.  Malchite Ore smelted makes Malchite Dust, which can be smelted again to make Copper Nuggets or be crafted into Malchite Ingots.  Copper Nuggets make Copper Ingots.  Tin Ore smelted makes Tin Ingots.  A mix of  tin and copper makes bronze, which has a few purposes