
20 Types of Materials
Dec 04, 2015Rareearths. A collection of metals that have various industrial uses. There are 17 rareearth elements namely cerium, dysprosium, erbium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium and yttrium. Despite their name, most rareearths are plentiful in the