pumice

Also known as pumice stone

thumb|Kutkhiny Baty, a pumice rock formation outcrop located 4 km from the source of the Ozyornaya (Sea of Okhotsk)|Ozyornaya River (Lake Kurile), near the southern tip of the [[Kamchatka Peninsula, Russia]]

AI overview

Pumice is a light, porous volcanic rock that forms when lava with trapped gas cools and solidifies. It matters because it's useful for various practical applications and its presence in geological formations, like the Kutkhiny Baty outcrop in Russia, helps scientists understand volcanic activity and Earth's geology.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Rock.name: Pumice
Rock.type: Igneous
Rock.image: Teidepumice.jpg
Rock.caption: Specimen of highly porous pumice from Teide volcano on Tenerife, Canary Islands. Density of specimen approximately 0.25 g/cm3; scale in centimeters.
Rock.composition: Volcanic glass
Rock.composition_secondary: Alkali feldspar, quartz, biotite, sanidine, zircon, magnetite and hornblende
Rock.class: Felsic to intermediate
Rock.texture: Vesicular with matrix being glassy or aphanitic, sometimes porphyritic

via Wikipedia infobox

Wikidata facts

Image: Raflinoer32-Museum Geologi-Batu apung.jpg

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Commons category: Pumice
exact match: purl.obolibrary.org/obo/ENVO_01000663

Sources (7)

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Article

21 sections

Contents

Properties
Comparison with scoria
Gallery
Etymology
Distribution
Asia
Europe
North America
South America
Africa
New Zealand
Mining
Use in volcanology
Other uses
Early medicine
Personal care
Cleaning
Horticulture
Construction
References
External links

Pumice (), 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. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles, thicker vesicle walls, and being dark colored and denser.