REE-bearing minerals in a Ti-rich vein from the Adamello contact aureole (Italy)

A stable (Li, O) and radiogenic (Sr, Nd) isotope perspective on metasomatic processes in a subducting slab

“…Although REE and HFSE are often considered as relatively immobile, fluid-mobility of these elements has been described in several cases (e.g., Gao et al, 2007;Gieré and Williams, 1992). (Fig.…”

Naturally-Occurring Zirconolites - Analogues for the Long-Term Encapsulation of Actinides in Synroc

“…Natural zirconolites are rare but have been found in a number of locations [3,4], Generally they contain elevated levels of uranium and thorium (up to 25 wt% U0 2 and 18 wt% Th0 2 ) and can be used as the basis of an investigation on the disposal of Synroc and other zirconolite-rich ceramic high level wasteforms over exceptionally long periods of time.…”

“…A number of the natural zirconolite samples described in the literature [3] were obtained as single grain samples or as detrital pebbles and have not been studied in situ. However, zirconolite samples from Phalaborwa, Bergell and Adamello locations can be studied in conjunction with their host rock to better define geochemical interactions [4].…”

Cost-Effective Cementitious Material Compatible with Yucca Mountain Repository Geochemistry

“…Although there are studies that have examined the influence of inorganic ligands on the solubility of silicate and phosphate phases (Saxena 1966, Kraynov 1969, Giere 1989, Rubin et al 1993, Fayek and Kyser 1997, Cherniak 2000, Poitrasson et al 2000, Cherniak and Watson 2001, Trocellier and Delmas 2001, Geisler et al 2002, Nagy et al 2002, few studies have considered the influence of organic ligands. Organic ligands have been shown to occur in subsurface fluids (e.g., Carothers and Kharaka 1978, Giordano and Kharaka 1994, Fein 1994) and, they can enhance porosity in sedimentary basins by dissolution of silicate minerals such as feldpars (Fein 1994).…”