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Giant selenite crystals

March 27, 2007

Some of you may have seen these photos….they have been circulating via e-mail over the last few weeks.

Pretty amazing….probably the largest selenite (CaSO4·2H2O) crystals found, i’d imagine. Miners discovered them in Naica Mine, Chihuahua, Mexico. Note people for scale in photos.




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5 Comments leave one →
  1. Lab Lemming permalink
    March 27, 2007 5:00 pm

    Isn’t Selenite SrSO4?

  2. Brian permalink
    March 27, 2007 8:20 pm

    hmmm….all the online databases I checked simply say it is a variety of gypsum, which is the formula I listed above…Mindat.org says strontium sulfate is called ‘celestine’

  3. Lab Lemming permalink
    March 28, 2007 3:42 am

    I stand corrected. See what happens you you avoid evaporites for 13 years?

  4. Bangin' Sedimentologist permalink
    January 1, 2008 6:57 pm

    Selenite is the colorless crystalline variety of Gypsum, and also covered the April issue of Geology. Megacrystals are simply amazing and blow me away

  5. July 8, 2009 4:01 pm

    Hey! What are you doing in my house?! ¬¬

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