| Like other rare earth metals, it is found in minerals such as cerite, gadolinite, and samarskite. |
|
| Polycrase, or an allied species, was seen implanted upon the gadolinite, this is also new to the region. |
|
| 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. |
|
| Other minerals that have been used as a source of rare earths are apatite, euxenite, gadolinite, and xenotime. |
|
| Some important mineral sources of dysprosium are laterite ionic clays, xenotime, fergusonite, gadolinite, euxenite, polycrase, and blomstrandine. |
|
| Yttrium occurs especially in the heavy rare-earth ores, of which laterite clays, gadolinite, euxenite, and xenotime are the most important. |
|
| The most common ores of holmium are monazite and gadolinite. |
|
| Gadolinite typically occurs as long slender prisms with pyramidal terminations and diamond-shaped cross sections. |
|
| Gadolinite and allanite intergrowths form walnut-shaped vitreous black masses and nodules to 5 cm across. |
|
