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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').
Location of the Swords and Crystal caves with the gypsum crystals within the conceptual block diagram of Naica mine. The Cave of the Crystals is a cave approximately 300 m (1,000 ft) below the surface in the limestone host rock of the mine, about 109-metre (358 ft) long, with a volume of 5,000 to 6,000 cubic metres (180,000 to 210,000 cu ft). [7]
Selenite "sword", 22.6 by 2.6 by 1.6 centimetres (8.90 in × 1.02 in × 0.63 in). A small version of the giant crystals, likely found in a natural cavity in the mine. A scientific team coordinated by Paolo Forti, specialist of cave minerals and crystallographer at the University of Bologna (Italy), explored the cave in detail in 2006.
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Gypsum occurs in nature as flattened and often twinned crystals, and transparent, cleavable masses called selenite. Selenite contains no significant selenium; rather, both substances were named for the ancient Greek word for the Moon. Selenite may also occur in a silky, fibrous form, in which case it is commonly called "satin spar".
Selenium occurs naturally in a number of inorganic forms, including selenide, selenate, and selenite, but these minerals are rare. The common mineral selenite is not a selenium mineral, and contains no selenite ion, but is rather a type of gypsum (calcium sulfate hydrate) named like selenium for the moon well before the discovery of selenium ...
Discovered in 2019, a room under the Guadalupe Room with gypsum rinds and selenite blades similar to those found in Lechuguilla Cave. Mabel's Room A moderate-sized room located past the Talcum Passage in Lower Cave. Mystery Room A large, sloping room located off the Queen's Chamber, named for an unexplained heartbeat-like noise heard only here ...
Selenite (mineral), a variety of gypsum (CaSO 4 ·2H 2 O) Selenites is a synonym of Zophos, a genus of land snails in the family Haplotrematidae; Selenite Range, a mountain range in Pershing County, Nevada Selenite Peak, a summit in the Selenite Range, Nevada; Selenite, a high class citizen that experienced space travel, from the videogame Event_0
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