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 …

Feb 19, 2025 · pumice, a very porous, frothlike volcanic glass that has long been used as an abrasive in cleaning, polishing, and scouring compounds. It is also employed as a lightweight …

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 …

Pumice is a light-colored, extremely porous igneous rock that forms during explosive volcanic eruptions. It is used as aggregate in lightweight concrete, as landscaping aggregate, and as …

Pumice is an extrusive igneous rock composed of highly vesicular volcanic glass, formed from violent eruption, depressurization, and rapid cooling of lava. It is usually lightly colored with a …

The meaning of PUMICE is a volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing.

Pumice is a term for a lightweight volcanic rock. It is a solidified frothy lava, created when highly-heated, pressured molten rock is shot out from a volcano. Its light weight is due to air spaces, …

Jul 28, 2017 · Pumice is a pyroclastic (meaning it is formed from volcanic matter), igneous rock.

PUMICE definition: 1. a type of grey, light stone that is used in pieces or as a powder for rubbing things to make…. Learn more.

Mar 10, 2019 · Crushing pumice rock into a powder produces a substance called pumicite or simply volcanic ash. Pumice is an igneous rock that forms when magma suddenly …