Matches in SemOpenAlex for { <https://semopenalex.org/work/W3109558100> ?p ?o ?g. }
- W3109558100 endingPage "1811" @default.
- W3109558100 startingPage "1802" @default.
- W3109558100 abstract "Abstract Praseodymium is capable of existing as Pr3+ and Pr4+. Although the former is dominant across almost all geological conditions, the observation of Pr4+ by XANES and Pr anomalies (both positive and negative) in multiple light rare earth element minerals from Nolans Bore, Australia, and Stetind, Norway, indicates that quadrivalent Pr can occur under oxidizing hydrothermal and supergene conditions. High-temperature REE partitioning experiments at oxygen fugacities up to more than 12 log units more oxidizing than the fayalite-magnetite-quartz buffer show negligible evidence for Pr4+ in zircon, indicating that Pr likely remains as Pr3+ under all magmatic conditions. Synthetic Pr4+-bearing zircons in the pigment industry form under unique conditions, which are not attained in natural systems. Quadrivalent Pr in solutions has an extremely short lifetime, but may be sufficient to cause anomalous Pr in solids. Because the same conditions that favor Pr4+ also stabilize Ce4+ to a greater extent, these two cations have similar ionic radii, and Ce is more than six times as abundant as Pr, it seems that Pr-dominant minerals must be exceptionally rare if they occur at all. We identify cold, alkaline, and oxidizing environments such as oxyhalide-rich regions at the Atacama Desert or on Mars as candidates for the existence of Pr-dominant minerals." @default.
- W3109558100 created "2020-12-07" @default.
- W3109558100 creator A5022546856 @default.
- W3109558100 creator A5028143373 @default.
- W3109558100 creator A5057868095 @default.
- W3109558100 date "2020-12-01" @default.
- W3109558100 modified "2023-10-07" @default.
- W3109558100 title "Quadrivalent praseodymium in planetary materials" @default.
- W3109558100 cites W1568437488 @default.
- W3109558100 cites W1661939691 @default.
- W3109558100 cites W1748094370 @default.
- W3109558100 cites W1789375511 @default.
- W3109558100 cites W1841860151 @default.
- W3109558100 cites W1850354454 @default.
- W3109558100 cites W196266417 @default.
- W3109558100 cites W1964736610 @default.
- W3109558100 cites W1966973922 @default.
- W3109558100 cites W1971981369 @default.
- W3109558100 cites W1974494400 @default.
- W3109558100 cites W1974531340 @default.
- W3109558100 cites W1975384952 @default.
- W3109558100 cites W1975994497 @default.
- W3109558100 cites W1976447350 @default.
- W3109558100 cites W1978548964 @default.
- W3109558100 cites W1982020297 @default.
- W3109558100 cites W1982473422 @default.
- W3109558100 cites W1982508969 @default.
- W3109558100 cites W1988887597 @default.
- W3109558100 cites W1998031199 @default.
- W3109558100 cites W2000915227 @default.
- W3109558100 cites W2001786617 @default.
- W3109558100 cites W2004073094 @default.
- W3109558100 cites W2007965942 @default.
- W3109558100 cites W2012364857 @default.
- W3109558100 cites W2014389071 @default.
- W3109558100 cites W2014862981 @default.
- W3109558100 cites W2018333824 @default.
- W3109558100 cites W2026545121 @default.
- W3109558100 cites W2028905891 @default.
- W3109558100 cites W2034624528 @default.
- W3109558100 cites W2034767561 @default.
- W3109558100 cites W2037110411 @default.
- W3109558100 cites W2038824481 @default.
- W3109558100 cites W2042434711 @default.
- W3109558100 cites W2042570502 @default.
- W3109558100 cites W2060520165 @default.
- W3109558100 cites W2062052096 @default.
- W3109558100 cites W2063224612 @default.
- W3109558100 cites W2070227796 @default.
- W3109558100 cites W2071386916 @default.
- W3109558100 cites W2074163061 @default.
- W3109558100 cites W2074583644 @default.
- W3109558100 cites W2077222835 @default.
- W3109558100 cites W2082171977 @default.
- W3109558100 cites W2082766096 @default.
- W3109558100 cites W2085012907 @default.
- W3109558100 cites W2085064498 @default.
- W3109558100 cites W2089507620 @default.
- W3109558100 cites W2089563856 @default.
- W3109558100 cites W2089966588 @default.
- W3109558100 cites W2093649508 @default.
- W3109558100 cites W2095552394 @default.
- W3109558100 cites W2099351865 @default.
- W3109558100 cites W2103318696 @default.
- W3109558100 cites W2104778898 @default.
- W3109558100 cites W2116419449 @default.
- W3109558100 cites W2118918130 @default.
- W3109558100 cites W2129430709 @default.
- W3109558100 cites W2136556132 @default.
- W3109558100 cites W2144343420 @default.
- W3109558100 cites W2147951902 @default.
- W3109558100 cites W2159186583 @default.
- W3109558100 cites W2162560253 @default.
- W3109558100 cites W2167590372 @default.
- W3109558100 cites W2197740926 @default.
- W3109558100 cites W2253448099 @default.
- W3109558100 cites W2265798136 @default.
- W3109558100 cites W2269131626 @default.
- W3109558100 cites W2288965978 @default.
- W3109558100 cites W2398097497 @default.
- W3109558100 cites W2412153113 @default.
- W3109558100 cites W2499795487 @default.
- W3109558100 cites W2511763021 @default.
- W3109558100 cites W2518541566 @default.
- W3109558100 cites W2529025331 @default.
- W3109558100 cites W2530248222 @default.
- W3109558100 cites W2568513730 @default.
- W3109558100 cites W2572946939 @default.
- W3109558100 cites W2586364299 @default.
- W3109558100 cites W2591915002 @default.
- W3109558100 cites W2592367129 @default.
- W3109558100 cites W2675961186 @default.
- W3109558100 cites W2724336359 @default.
- W3109558100 cites W2791420394 @default.
- W3109558100 cites W2794029271 @default.
- W3109558100 cites W2797712567 @default.
- W3109558100 cites W2799744306 @default.
- W3109558100 cites W2805006578 @default.