COMMON METAL
- 
	copper and aluminum 
- 
	lead and Zinc 
- 
	Tin nickel 
- 
	iron and magnesium 
Minor METALS
RARE METAL
- 
	rare earth metal 
- Lanthanum
- cerium
- praseodymium
- neodymium 
 promethium
- samarium
- europium
- gadolinium
- Terbium
- dysprosium
- holmium
- erbium
- thulium
- ytterbium
- lutetium
- scandium
- yttrium
- 
	Other Rare Metalsl 
- Tantalum
- cesium

