@ARTICLE{Tatur_Andrzej_Fluorine_1987, author={Tatur, Andrzej}, volume={vol. 8}, number={No 1}, journal={Polish Polar Research}, pages={65-74}, howpublished={online}, year={1987}, publisher={Polish Academy of Sciences}, publisher={Committee on Polar Research}, abstract={A high content of fluorine was found in ornithogenic soils around penguin rookeries on King George Island. South Shetland Islands. Fluorine is inherent in 0.11% in krill (Euphausia superba). eaten by penguins. Fluorine content in penguins excreta increased approximately to 0.43%. and after decomposition and leaching to 1.03%. The concentration grew during mineralization of organic matter in guano (up to 2.2%). In a surface layer of guano fluorine occurred in apatite. A phosphatization was noted in a subsurface zone as the result of a reaction between guano leachates and weathered volcanic rocks. In the upper part of this zone near the large rookeries a fluorine occurred in minyulite (aluminium phosphate containing potassium and fluorine) and fluorine content here reached 3.5%. Sometimes fluorine was also bound with amorphous aluminium phosphate (up. to 2.0%). formed as a result of incongruently dissolving of minyulite in pure water.}, type={Article}, title={Fluorine in ornithogenic soils and minerals on King George Island, West Antarctica}, URL={http://www.czasopisma.pan.pl/Content/111362/PDF-MASTER/1987_1_065-074.pdf}, keywords={Antarctica, geochemistry, ornithogenic soil, phosphates, fluorine}, }