pumice by prutzworks
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Description
Pumice /ˈpʌmɨs/, called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typically light colored. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles and thicker vesicle walls and being dark colored and denser.[1][2]
Pumice is created when super-heated, highly pressurized rock is violently ejected from a volcano. The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid depressurization. The depressurization creates bubbles by lowering the solubility of gases (including water and CO2) that are dissolved in the lava, causing the gases to rapidly exsolve (like the bubbles of CO2 that appear when a carbonated drink is opened). The simultaneous cooling and depressurization freezes the bubbles in the matrix.
from wiki
found in the Eifel Germany
TFV & comments
Comments (9)
Juliette.Gribnau
boeiend !
jayfar
Quite a hard subject to photograph Martin!!
SunriseGirl
Great photo of the pumice detail. Thanks for the info as well. :)
ontar1
That is cool!
tofi
Very well captured! Information that I had no idea about, and is very interesting indeed! Excellent close-up and textures outlined and detailed!
flavia49
nice capture
goodoleboy
Great composition of lighting and texture in this shot of the volcanic rock, Martin. I use a pumice bar to smooth off the back of my cracked skin heels.
danapommet
Fantastic textures and very interesting narrative!
sossy
impressive textures! ;o)