| The most common ores of holmium are monazite and gadolinite. |
| Polycrase, or an allied species, was seen implanted upon the gadolinite, this is also new to the region. |
| Other minerals that have been used as a source of rare earths are apatite, euxenite, gadolinite, and xenotime. |
| The first of the rare earth minerals was discovered in 1794 by J. Gadolin and was named gadolinite from its discoverer. |
| 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. |
