VariousWords beta
Related Terms:
niobium
silicon
lanthanum
calcium
hydrogen
mineral
strontium
sodium
fluorine
chlorine
manganese
hafnium
tantalum
zirconium
oxygen
iron
titanium
praeseodymium
yttrium
neodymium
cerium
aluminum
potassium
samarium
Noun
Definition: A trigonal-ditrigonal pyramidal mineral containing aluminum, calcium, chlorine, fluorine, hafnium, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, strontium, tantalum, titanium, yttrium, and zirconium, as well as lanthanum, cerium, praeseodymium, neodymium, and samarium.