Exotic crystals of ‘ice 19’ discovered – Livescience.com

Scientists have identified the 19th form of water ice. The exotic, four-sided crystals of this rare ice variety, now dubbed ice XIX, form at ultra-low temperatures and ultra-high pressures. 
It only exists in laboratory experiments, but researchers say it reveals more about other forms of ice
, which can be found deep in the Earths mantle and on very cold planets and moons.
“To name a new ice form, one needs to elucidate exactly what the crystal structure is,” said lead researcher Thomas Loerting,…

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