pumice
Sign in to savethumb|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
Article
21 sectionsContents
- 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
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]]
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.