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Black colored icebergs (they come in blue, green, and brown too).

Black iceberg

Icebergs are typically white but various factors can occasionally cause them to turn a distinct color – green, brown, black, or blue are possible.  Factors that distort the iceberg color include a lower density of air within the ice (which allows less sunlight to reflect off the surface or pass through the iceberg with a scattered pattern of light) or a higher density of rock embedded within the ice.

Seldom are colored icebergs the result of man-made pollution or contaminants. Many times, a colored iceberg has rolled over, revealing the discolored basal ice that once lay underneath the surface.  Even striped icebergs are possible and can be created when a crevice fills quickly with water that freezes before ice bubbles are formed inside.

Although rarely seen in nature, here are some pictures of famously colored icebergs.

Image Credits

In-Article Image Credits

Black ice stiped iceberg in Iceland via Hippo PX with usage type - CC0 Public Domain
Blue Iceberg, Rødefjord, Northeast Greenland National Park via Flickr by Grid-Arendal with usage type - Creative Commons License. October 2014
Iceland blue and black Iceberg via Flickr by Marco Verch Professional Photographer with usage type - Creative Commons License. September 8, 2014
Black ice growler via Wikimedia Commons by Kim Hansen with usage type - GNU Free. July 7, 2007
Franz Josef Fjord, Iceberg black ice via Wikimedia Commons by Jerzy Strzelecki with usage type - GNU Free
Franz Josef Fjord, Iceberg via Wikimedia Commons by Jerzy Strzelecki with usage type - GNU Free

Featured Image Credit

Black iceberg via

 

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