...Karrie-Ann Kubatko; Katheryn B. Helean; Alexandra Navrotsky; Peter C. Burns Abstract Enthalpies of formation of rutherfordine, UO 2 CO 3 , andersonite, Na 2 CaUO 2 (CO 3 ) 3 (H 2 O) 5 , and grimselite, K 3 NaUO 2 (CO 3 ) 3 (H 2 O), have been determined using high-temperature oxide melt solution...

... previously known only from Wyoming and Czechoslovakia. The new species are named andersonite, swartzite, and bayleyite; they are, respectively, hydrous uranyl carbonates of sodium and calcium, of calcium and magnesium, and of magnesium, all of general formula X 4 UO 2 (CO 3 ) 3 · n H 2 O, where X 4...

... in association with andersonite, calcite, gypsum and natromarkeyite. Paramarkeyite crystals are transparent, pale green-yellow, striated tablets, up to 0.11 mm across. The mineral has white streak and vitreous lustre. It exhibits moderate bluish-white fluorescence (405 nm laser). It is very brittle...

...Fig. 2. Pearlescent masses of leószilárdite coat andersonite, with yellow natrozippeite and probable white spherical hydromagnesite. Horizontal field of view is ∼1.9 mm. Travis Olds specimen and photo. ...

..., As-rich vanadinite andersonite, čejkaite, malachite and devilline). Abellaite is colourless to white, with a vitreous to nacreous lustre. The mineral is translucent, has a white streak and is non-fluorescent. The aggregates of microcrystals are highly friable. The calculated density using the ideal...

... with andersonite, calcite, čejkaite, gaylussite, and goethite. Apexite forms colorless needles up to 0.5 mm in length. The streak is white. Crystals are transparent and have vitreous to satiny luster. The Mohs hardness is about 2, the tenacity is brittle, the fracture is curved, and crystals exhibit one perfect...

... in a sedimentary rock from Repete mine near Blanding, San Juan Co., Utah, U.S.A., in association with quartz, haynesite, andersonite, wölsendorfite, uranophane, gypsum, calcite and montmorillonite. The mineral is named in memory of Russian mineralogist and crystallographer Larisa Nikolaevna Belova (1923–1998) who...

..., the streak is light yellow, and the luster is vitreous. The broad secondary mineral association includes andersonite and schröckingerite. Chemical analysis (by ICP-MS and TG) gave (in wt%): Na 2 O = 21.39, MgO = 0.15, FeO = 0.53, UO 3 = 53.93, and CO 2 = 24.00 (calculated by difference). The simplified...

... minerals including tyuyamunite, uranophane, bayleyite, andersonite, schoepite, liebigite, swarlzite, and schroeckingerite have been identified. Azurite and malachite are also associated in some of the uranium occurrences in Lower Siwaliks. The sedimentological, geochrmical, and tectonic attributes...

... research, enabling him to prepare larger and purer crystals in cases where not enough pure natural material was available. He made synthetic zipppeite, metazeunerite, metakirchheimerite, a nickel-uranylarsenate, boltwoodite, liebigite, andersonite, rutherfordine, weeksite, chernovite, and meta-ankoleite...

... ( Mereiter, 1986 a ), swartzite, CaMg[(UO 2 )(CO 3 ) 3 ](H 2 O) 12 ( Mereiter, 1986 b ), andersonite, Na 2 Ca[(UO 2 )(CO 3 ) 3 ](H 2 O) 5 ] ( Mereiter, 1986 c ), bayleyite, Mg 2 [(UO 2 )(CO 3 ) 3 ] (H 2 O) 18 ( Mayer and Mereiter, 1986 ), roubaultite, [Cu 2 (UO 2 ) 3 (CO 3 ) 2 O 2 (OH) 2 ](H 2 O) 4...

..., and andersonite and liebigite are green and show fluorescence. In Nature, becquerelite crystals are usually yellow. However, synthetic becquerelite on calcite (identified as becquerelite by scraping the orange-red crystalline material from the calcite surface and characterizing it by X-ray powder diffraction...

...: Gorman-Lewis et al. 2007 ; uranyl carbonates (rutherfordine, grimselite, andersonite): Kubatko et al. 2005 ; uranyl vanadates (carnotite, curienite, francevillite): Spano et al. 2017 ; uranyl sul-fates (zippeite): Sharifironizi et al. 2016 ; natrozippeite, cobaltzippeite, zinczippeite: Sharifironizi...

... observed at the Shinkolobwe mine ( Pagoaga et al. 1987 ). Swartzite is found in association with bayleyite, andersonite and schrockingerite. It has only a narrow field of stability in the system Ca 2+ – Mg 2+ – [UO 2 (CO 3 ) 3 ] 4− – H 2 O ( Mereiter 1986 ). Swartzite has been established as one...

... O) 5 ( Mereiter 1986b ), andersonite, Na 2 Ca[(UO 2 )(CO 3 ) 3 ](H 2 O) 6 ( Mereiter 1986c ), and bayleyite, Mg 2 [(UO 2 )(CO 3 ) 3 ](H 2 O) 18 ( Mayer & Mereiter 1986 ) all contain this finite cluster. In each structure, the uranyl tricarbonate clusters are interconnected by low-valence...