| It is found with other rare earth elements in minerals such as monazite, cerite, gadolinite, xenotime, and euxenite. |
| In his 1885 report, Eakins described allanite and gadolinite from the area. |
| Yttrium occurs especially in the heavy rare-earth ores, of which laterite clays, gadolinite, euxenite, and xenotime are the most important. |
| Polycrase, or an allied species, was seen implanted upon the gadolinite, this is also new to the region. |
| Yttria may be obtained from gadolinite by a similar process to that by which glucina is extracted from the beryl. |
| Like other rare earth metals, it is found in minerals such as cerite, gadolinite, and samarskite. |
