noun1
- •
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.
This dictionary works without the internet: on your phone · in Chrome
