Uranyl tellurate

According to Gutbier, the addition of a uranyl salt to a solution of potassium tellurate yields a yellow curdy precipitate of uranyl tellurate. 

Brandstdtter F. Synthesis and crystal structure determination of lead uranyl tellurate Pb2(U02)(Te03)3. Z. Kristallogr., 155, 1981, 193-200. 

Selenates, selenites, and tellurates. Uranyl selenates and selenites have been prepared and can be expected to have the same coordination features as the sulfates and sulfites. In addition to the selenate, U02Se04, the ternary selenite (U02)2(OH)2(Se03), has been reported to form in... 

The order of presentation of the uranium minerals will follow chemical groups. The U minerals are discussed first, followed by the niobates, tantalates and titanates. These two groups include the primary reduced minerals. The uranyl minerals are considered in the order hydrated oxides, silicates, phosphates and arsenates, vanadates, molybdates, sulphates, carbonates, and selenates and tellurates. Each section includes an evaluation of the known crystal chemistry and its effect on chemical variability and occurrence of mineral species. 

A totally new group of minerals, all of which have been described since Frondel, comprises the uranyl selenates and tellurates. Although other selenate and tellurate minerals have been reported as occurring in many types of uranium deposits, the uranyl compounds have only been recognized at two rather different localities. A Au-Te deposit near Moctezuma, Mexico, has yielded moctezumite, cliffordite and schmit-terite and the Musonoi Cu-Co deposit at Katanga, Zaire, has produced the other minerals. Schmitterite has also been found at the Shinkolobwe uranium deposit in Katanga. All the minerals are secondary. 

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