| Like other rare earth metals, it is found in minerals such as cerite, gadolinite, and samarskite. |
| Yttrium occurs especially in the heavy rare-earth ores, of which laterite clays, gadolinite, euxenite, and xenotime are the most important. |
| The rare earth metals are found in the minerals gadolinite, samarskite, fergusonite, euxenite and cerite. |
| It is found with other rare earth elements in minerals such as monazite, cerite, gadolinite, xenotime, and euxenite. |
| Yttria may be obtained from gadolinite by a similar process to that by which glucina is extracted from the beryl. |
| The most common ores of holmium are monazite and gadolinite. |
