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Gypsum : CaSO4·2H2O

 
 
minID: J3W-XCD

Gypsum : CaSO4·2H2O

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Large Selenite var. of Gypsum crystal with slight amber color. Fluoresces orange under SWUV. Found in California Wash SW of Saint David. Rolf Luetcke specimen and photo.

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Photo added: 20th Jul 2011