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Giant Gypsum Rosette
endure an ice - pack undershirt , Mario Corsalini stands by a gargantuan rosette of gypsum in the Naica Mine ’s watch crystal cavern .
[ Read the full story on the revived microbes from the lechatelierite cave ]
Butterfly Crystal
A multifaceted " butterfly " crystal clings to the wall in the Naica Mine ’s Cave of Crystals . These crystals formed in mineral - rich water heat up to correctly around 136 degrees F ( 58 degrees C ) , a temperature at which the mineral anhydrite in the water is deposited as gypsum , concord to 2007 research in the diary Geology . The gypsum in the crystals is in the figure of selenite .
Experiencing the Cave
Laura Rosales Lagarde of the University of Nevada , Las Vegas , takes a moment to live the heating of the Cave of Crystals without an chalk suit or other protective gear . With temperatures that can hover near 140 degrees F ( 60 degrees C ) , the cave is adequate for an unsuited someone for just a few moments .




















