PHGreen "emerald icebergs" exist.
It's hard to imagine icebergs as anything other than gigantic snow-white mini-islands floating around the coldest places on Earth. But for years, scientists have been baffled by the occasional "emerald iceberg." And while the color may seem odd, glaciologist Stephen Warren of the University of Washington has climbed up one of the frozen wonders to get a closer look.
"What is most amazing is not You do not have permission to view the full content of this post. Log in or register now., because they have no bubbles," he told IFL Science. "Ordinary icebergs originate as snow; as the snow is compressed under its own weight into ice, the air in the snow is closed off as bubbles. So glacier ice contains numerous bubbles, and icebergs are bright and cloudy." After taking samples from the jade-colored iceberg, Warren found that the color was due to the fact that the icebergs were made of marine ice instead of glacial ice, and contained more iron oxide than typical ice.
(S) bestlifeonline