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Selenite, satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum.. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO 4 ·2H 2 O. Selenite contains no selenium, the similar names both derive from Greek selḗnē (σελήνη 'Moon').
Copper(II) selenite is an inorganic salt frequently found as its dihydrate, CuSeO 3 ·2H 2 O, in the form of a blue powder. [2] [3] Preparation.
Selenite (ion), anion is a selenium oxoanion with the chemical formula SeO 3 2−. Selenous acid, the conjugate acid, with the formula H 2 SeO 3; Salts of this anion: Silver selenite, an inorganic compound of formula Ag 2 SeO 3; Sodium selenite, a salt, a colourless solid, and the most common water-soluble selenium compound
Selenium is toxic in high concentrations. As sodium selenite, the chronic toxic dose for human beings was described as about 2.4 to 3 milligrams of selenium per day. [7] In 2000, the US Institute of Medicine set the adult Tolerable upper intake levels (UL) for selenium from all sources - food, drinking water and dietary supplements - at 400 μg/day. [8]
The Selenite Range is a mountain range in western Pershing County, Nevada. [1] The range is a north–south trending feature approximately 27 miles (43 km) long and 4 miles (6.4 km) wide. The Fox Range lies to the west across the San Emidio Desert valley and the south end of the Black Rock Desert playa.
Gomeo Bobelu (December 25, 1964–November 16, 2022), was a Zuni (Zuni: Shiwi) (Badger Clan and Child of the Corn Clan) [1] lapidary jeweler and silversmith who was known for his gemstone-inlayed silver jewelry.