Hafnium has no known biological function. The ferric ion binding protein (nFbp) from Neisseria gonorrhoeae can bind clusters of Hf4+ in solution (Alexeev et al, 2003). Hafnium can be leached from zircon through the activity of Thiobacillus ferrooxidans (Becker et al, 1986).

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Search Medline for hafnium AND bacteria

Becker S, Bullmann M, Dietze HJ, and Iske U. Mass spectographic determination of selected chemical elements by microbial leaching of zircon. Fresenius Z Anal Chem. 1986;324:37-42.


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