Nature's crystal palace

Nature's crystal palace

Slow-growing crystals formed over thousands of years in Mexico cave

By Devin Powell, 14:32 PM September 12, 2011

Mexico’s Cueva de los Cristales, or Cave of Crystals, may look like Superman’s Fortress of Solitude. But unlike its comic book counterpart, this cave’s assortment of supersized crystals took a lot longer than a few minutes to grow.

Under a laboratory microscope, pieces of these gypsum crystals immersed in mineral-rich water elongated a mere billionth of a meter per day, a team of scientists in Spain and Japan reports online the week of September 12 in the Proceedings of the National Academ...

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