Moosey - for your information Ytterbium is a rare earth element that is found in most heavy rare earth deposits.(and is stable) Natural ytterbium is a mixture of seven stable isotopes, which altogether are present at concentrations of 0.3 parts per million. This element is mined in China, the United States, Brazil, and India in form of the minerals monazite, euxenite, and xenotime. For more information go
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A company I am invested in (MEI) has concentrations of Ytterbium at about 0.3% in its ore:
Ytterbium (all 7 isotopes of it) are found in this ore - no need for recovering it from UNF. (just another "rabbit") The task of SLX medical isotopes project is to separate out the Yb176 isotope from the non radioactive HREE Yb separated by another supplier (a refiner), purchased on the international market and used as feedstock by SLX - no need to get into radio-active materials.
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