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Selenite Stick
$5.00
Category: Sulfate mineral
Formula: CaSO4·2H2O
Mohs scale: hardness 2
Luster: Pearly
Streak: white
Specific gravity: 2.9
Approximately 6” in length. As with all natural formations, photos are representative of the typical selection, please allow for slight variations.
FURTHER RESEARCH
SELENITE
Selenite, satin spar, desert rose, 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 CaSO4·2H2O. Selenite contains no significant selenium, the similarity of the names of the substances coming from the Ancient Greek word for the Moon. Some of the largest crystals ever found are of selenite, the largest specimen found in the Naica Mine's Cave of the Crystals being 12 metres long and weighing 55 tons.
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