VariousWords beta
Related Terms:
mineral
silicon
praseodymium
titanium
iron
hydrogen
cerium
aluminum
neodymium
calcium
samarium
fluorine
lanthanum
magnesium
beryllium
oxygen
boron
thorium
uranium
lithium
Noun
Definition: A monoclinic-prismatic pale brown mineral containing aluminum, beryllium, boron, calcium, fluorine, hydrogen, iron, lanthanum, cerium, praseodymium, neodymium, samarium, lithium, magnesium, oxygen, silicon, thorium, titanium, and uranium.