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Ice, H2O in Alaska
  
  Index -> Micros & Macros - Images of Minerals
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Bob Harman




Joined: 06 Nov 2015
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PostPosted: May 11, 2020 01:15    Post subject: Ice, H2O in Alaska  

I thought I might do something a bit different.

Ice, H2O, crystallized water can be considered a mineral. Glacial ice is often of a bluish tint due to its being extremely compressed. This is different than "ordinary" ice in that the glacial ice has had the air squeezed out of it so the H2O crystals are closer together giving it the bluish color due to play of light thru the ice. Also, blue glacial ice is slightly denser than "ordinary" ice so it floats slightly lower in surrounding water.

This is the terminus of Mendenhall Glacier as seen in May 2011 during my last trip up there. Note the bluish areas and recent retreat of the glacier. BOB



ALASKATRIP 255.jpg
 Mineral: Ice, crystallized H2O
 Locality:
Alaska, USA
 Description:
Mendenhall Glacier is about 12 miles from downtown Juneau, Alaska
 Viewed:  3346 Time(s)

ALASKATRIP 255.jpg


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Josele




Joined: 10 Apr 2012
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PostPosted: May 11, 2020 07:16    Post subject: Re: Ice, H2O in Alaska  

Under certain conditions of humidity and temperature, fog crystallizes forming aggregates on the previous snowed surface, like in these pics:


P1020616.jpg
 Mineral: Ice
 Description:
Bugaboos Mountains, British Columbia, Canada

Ice crystals in the shadow:
 Viewed:  3296 Time(s)

P1020616.jpg



P1020618.jpg
 Mineral: Ice
 Description:
Bugaboos Mountains, British Columbia, Canada

Field of view about 30 cm
 Viewed:  3299 Time(s)

P1020618.jpg


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