Gadolinium takes its name after the famous Finnish chemist and mineralogist Johan Gadolin.

Holmium occurs in gadolinite and other minerals containing rare earths.

Mosander separated yttria into three fractions (he called these yttria, erbia and terbia).

It is found in Sweden, Norway, and the USA (Texas and Colorado).

Ytterbium is found in minerals such as yttria, monazite, gadolinite and xenotime.

Mosander separated "yttria" from the mineral gadolinite into three fractions which he called yttria, erbia, and terbia.

Ytterbium is found in minerals such as yttria, monazite, gadolinite and xenotime.

Nilson used spectrum analysis to find the new element within the minerals euxenite and gadolinite.

It is mostly found with other Lanthanides and Rare Earth elements in monazite, xenotime and euxenite.

It is found in Sweden, Norway, and the US (Texas and Colorado).

Rhenium (Re) is found in the combined state in platinum ores, gadolinite, molybdenite (MoS2) and columbite.

It is found in some of the less common minerals (e.g. gadolinite and xenotime) and is difficult to isolate.

Nilson used spectrum analysis to find the new element within the minerals euxenite and gadolinite.

Rhenium (Re) is found in the combined state in platinum ores, gadolinite, molybdenite (MoS2) and columbite.

Gadolinium, one of the rare earth metals, was named after the mineral gadolinite, which in turn was named for Finnish chemist Johan Gadolin, who became.