See, glaciers sucks freon from the air and converts it to ce, therefore it is not water a glacier is composed of. :)


·Density is the ratio of the mass of an object to its volume. Snow has a density averaging about 0.1, firn has a density greater than 0.55, and glacier ice has a density of about 0.89. The density of unmineralized fresh water is 1.
·Glaciologists measure snowpack density frequently so that they may anticipate future water supplies, and to assess avalanche hazards. The density of a fresh snowpack is about 0.1; firn has a density of about 0.55 and glacier ice, of about 0.89. Each annual snow layer has a characteristic grain size and density

Another Site

"The density of ice Ih is 0.931 gm/cubic cm. This compares with a density of 1.00 gm/cubic cm. for water. There are eleven different forms of crystalline ice that are know. The hexaganol [sic] form known as ice Ih is the only one that is found naturally."


And another

- glacier ice - bluish in colour and containing little air - this may take 40-50 years, depending on the location - see below - and has a density of 0.8-0.9 - water has a density of 1.