Reticulite Reticulite (also called basalt pumice or thread-lace scoria) is a volcanic rock that can
ReticuliteReticulite (also called basalt pumice or thread-lace scoria) is a volcanic rock that can only be formed in fountains of basaltic lava (containing high amounts of dissolved gases, water vapor and carbon dioxide) that must be at least 300m high. When the molten lava reaches the surface at high velocity and contacts the air, the gases within separate rapidly from the lava, as a result of the abrupt decrease in atmospheric pressure. Those gases in the form of bubbles burst while the lava cools down very quickly. In the end, we obtain this pretty, but fragile, honeycomb network of burst bubbles.Reticulite is the rock with the lowest density and highest levels of porosity - roughly 98%. A neat thing is that since this rock is so porous, most samples can float on water and because it is so light, reticulite is often carried many kilometers away from the eruption site by the wind.SuSource:http://bit.ly/2smnnKZPhoto credits:http://bit.ly/2rU6WEe - photo by James St. Johnhttp://bit.ly/2smnnKZ - photo by James Van Gundy -- source link
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