Home›Open Questions›Is thulium or lutetium the least abundant of the naturally occurring lanthanides?Open QuestionsIs thulium or lutetium the least abundant of the naturally occurring lanthanides?Citation FormatsGeneral ReferenceGeneral Reference Citation TextDivinity Atlas. "Is thulium or lutetium the least abundant of the naturally occurring lanthanides?." Accessed August 30, 2026. https://www.divinityatlas.com/open-questions-index/is-thulium-or-lutetium-the-least-abundant-of-the-naturally-occurring-lanthanides.Copy General ReferenceAPA StyleAPA Style Citation TextDivinity Atlas. (n.d.). Is thulium or lutetium the least abundant of the naturally occurring lanthanides?. Retrieved August 30, 2026, from https://www.divinityatlas.com/open-questions-index/is-thulium-or-lutetium-the-least-abundant-of-the-naturally-occurring-lanthanidesCopy APA StyleBibTeXBibTeX Citation Text@misc{divinityatlas-is-thulium-or-lutetium-the-least-abundan, author = {Divinity Atlas}, title = {Is thulium or lutetium the least abundant of the naturally occurring lanthanides?}, year = {2026}, url = {https://www.divinityatlas.com/open-questions-index/is-thulium-or-lutetium-the-least-abundant-of-the-naturally-occurring-lanthanides}, note = {Accessed August 30, 2026} }Copy BibTeXOpen QuestionCross-Tradition ConnectionsSourcesComments (0)Reader Challenges (0 open reader challenges)Open QuestionPublished crustal abundance estimates put both at roughly half a part per million, and the two sit within the uncertainty of each other. Sources disagree about which is lower, and several simply assert one without stating a figure.What would resolve this A modern determination of both abundances by the same method with stated uncertainties, so the comparison is like for like.OpenGeochemistry, specifically crustal abundance measurement.Gordon B. Haxel, James B. Hedrick and Greta J. Orris, Rare Earth Elements: Critical Resources for High TechnologyCross-Tradition ConnectionsDiscipline NeededGeochemistry, Scholarly Disciplines Well-attested Source Rare Earth Elements: Critical Resources for High TechnologyGordon B. Haxel, James B. Hedrick and Greta J. Orristier 1Question OnThulium, Periodic Elements Well-attested Source Rare Earth Elements: Critical Resources for High TechnologyGordon B. Haxel, James B. Hedrick and Greta J. Orristier 1SourcesRare Earth Elements: Critical Resources for High Technologytier 1Gordon B. Haxel, James B. Hedrick and Greta J. Orris, United States Geological Survey Fact Sheet 087-02, 2002Pages 2 and 4View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year