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Giant Crystal Cave's Mystery Solved
Stefan Lovgren for National Geographic News April 6, 2007 It's "the Sistine Chapel of crystals," says Juan Manuel García- Ruiz. The geologist announced this week that he and a team of researchers have unlocked the mystery of just how the minerals in Mexico's Cueva de los Cristales (Cave of Crystals) achieved their monumental forms. Buried a thousand feet (300 meters) below Naica mountain in the Chihuahuan esert, the cave was discovered by two miners excavating a new tunnel for the Industrias Peñoles company in 2000. The cave contains some of the largest natural crystals ever found: translucent gypsum beams measuring up to 36 feet (11 meters) long and weighing up to 55 tons. "It's a natural marvel," said García-Ruiz, of the University of Granada in Spain. To learn how the crystals grew to such gigantic sizes, García-Ruiz studied tiny pockets of fluid trapped inside. The crystals, he said, thrived because they were submerged in mineral-rich water with a very narrow, stable temperature range—around 136 degrees Fahrenheit (58 degrees Celsius). At this temperature the mineral anhydrite, which was abundant in the water, dissolved into gypsum, a soft mineral that can take the form of the crystals in the Naica cave. The new findings appear in the April issue of the journal Geology. ![]() ![]() ![]() ![]() ![]() ![]() THIS IS ONE REASON WHY OUR WORLD IS SO ABSOLUTELY FABULOUS!! JOIN PROJECT 1 WORLD WITH ME!! |
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