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Hydrous
Vanadinite on Goethite
Gypsum Flower
Talc from Massachusetts
Topaz
Gypsum
Kaolinite
Kaolin
Halotrichite from California
Gyrolite from the Bombay District, India
Opals
Fluorescing Selenite Gypsum
Fluorescing Selenite Gypsum
Copper, Mimetite and Limonite
Adamite on Limonite
Carved Opal
Olympic Australis Opal
Turquoise
Cyanotrichite mined in early 1900's
Selenite (CaSO4-2H2O) (Hydrous calcium sulfate)
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