Aug 16, 2023 · Pumice is a volcanic rock that consists of highly vesicular rough textural rock glass. It generally light colored. It is created when gas-saturated liquid magma erupts like a carbonated drink and cools so rapidly that the resulting foam solidifies into a …

Pumice ( / ˈpʌmɪs /), called pumicite in its powdered or dust form, is a volcanic rock that consists of extremely vesicular rough-textured volcanic glass, which may or may not contain crystals. It is typically light-colored.

Texture of Pumice. One of the defining features of pumice’s appearance is its texture. All pumice is highly vesicular, meaning it is riddled with gas bubbles and has a very high porosity. This texture occurs when magma with a lot of soluble gas erupts to the surface and cools rapidly, trapping gas bubbles in hardened, amorphous volcanic glass.

Pumice is an extrusive igneous rock with a vesicular texture and very low specific gravity. It is used to make lightweight concrete, abrasive products and more.

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Pumice is an incredibly lightweight volcanic rock formed through the rapid cooling and depressurization of magma during explosive volcanic eruptions. Its porous, frothy structure is due to the gas bubbles trapped inside the lava as it cools, creating a highly vesicular texture.

Sep 14, 2024 · Pumice is a highly vesicular, frothy, or form-like volcanic rock with a glassy texture. Some specimens have an aphanitic texture but are rare. It has a rough surface, is highly porous, and has a Mohs hardness scale of 5-5.5.

Type Igneous Rock Texture Vesicular Origin Extrusive/Volcanic Chemical Composition Felsic Color White Mineral Composition Predominantly Glass Miscellaneous Very light in weight Tectonic Environment Convergent Boundary – Andean-type subduction zones, intracontinental hot spots and rifts

May 14, 2024 · This gives it a distinctive, abrasive texture that can be felt when you run a finger over the material. It also means that pumice can float on water since the majority of its mass is riddled with bubbles that trap air or other gasses inside. Watch Pumice Float on Water!

Jun 15, 2023 · Pumice is a very low-density, form-like, mostly light-colored glassy volcanic rock with a vesicular texture, not a mineral. This rough, porous rock forms from mostly silicic, high-viscosity, volatile-rich lava during an explosive volcanic eruption.