Giant Crystals

The gigantic plaster crystals that occupy the interior of the Mexican cave of Naica take growing until a million years, although recently they have only been shortages. Although they get to measure 11 meters in length and a meter of width, these selenitas (its scientific name) grow at a speed slow, incredibly equivalent to the thickness of a hair every 100 years and therefore much more reduced that the one of stalactites and stalagmites, have concluded the scientists have studied who them. Led by the cristalgrafo Juan Manuel Garci’a Ruiz, of the CSIC, a Spanish-Japanese equipment it designed a highly sensitive microscope with which it studied samples of crystals of the cave, one of the several that contain these formation in the mine of Naica. The investigation is published in cover in the Proceedings magazine of the National Academy of Sciences (the USA). Source of the news: : Giant crystals of until a million years