Mineral replacement reactions in naturally occurring hydrated uranyl phosphates from the Tarabau deposit: Examples in the Cu–Ba uranyl phosphate system

• Published in: Chemical geology Vol. 312-313; pp. 18 - 26
• Main Authors: Pinto, André Jorge, Gonçalves, Mário A., Prazeres, Cátia, Astilleros, José Manuel, Batista, Maria João
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 18.06.2012
• Subjects: aluminum; barium; cation exchange; Cation exchanging; Cations; Copper; Deposits; Dissolution–precipitation reaction; groundwater; Interlayers; iron; Mineral replacement; Minerals; Nisa deposit; Phases; Phosphates; porosity; scanning electron microscopy; solubility; stoichiometry; Uranyl phosphate; X-ray diffraction; Portugal; ANE, Portugal; Nisa deposit; Uranyl phosphate; Dissolution–precipitation reaction; Mineral replacement

Uranyl phosphates are a mineral group which include a wide range of different species, each containing specific cations within the hydrated interlayer, and often display a geochemical/mineralogical relationship with Fe(III) oxy-hydroxides. The environmental relevance of these U-phases arises from th...