Glacier ice is definitely blue. You can stand right next to it and see that it is blue. It is not a reflection of the sky. The reason is that glacier ice is so dense, that it absorbs all of the colors of the light except blue. Sometimes the ice can appear almost green, but usually, as you can see in the above photo, the ice is a brilliant blue color. You may need to click on the image to see the bands of ice visible under the snow cover.
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