pumice

Table of Contents

Introduction References & Edit History Related Topics

Images & Videos

Mount St. Helens eruption.

Study how magma erupts as lava and turns into pumice or hardens to form a shield volcano

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solar eclipse, sun, moon, astronomy, space

How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?

Arrangement of the phases of the moon in total eclipse with Blood Moon

9 Celestial Omens

Solar system illustration. (planets; sun)

Why Are Planets Round?

Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)

How Fast Is the Universe Expanding?

Astronomical Observatory of the Mojon del Trigo. Long exposure using the star trail technique. Sierra Nevada National Park, in the province of Granada, Andalusia.

Is Earth Going to Change the Direction in Which It Rotates?

Discover

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

7 of the World’s Most Dangerous Festivals

Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)

6 Cultures That Recognize More than Two Genders

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

7 Winter Solstice Celebrations From Around the World

pumice: References & Edit History

More Articles On This Topic

Assorted References

occurrence in Africa
- In Africa: Nonmetallic deposits
texture and density
- In igneous rock: Small-scale structural features

Article Contributors

Primary Contributors

The Editors of Encyclopaedia Britannica

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	Modified link of Web site: National Center for Biotechnology Information - PubMed Central - Pumice Characteristics and Their Utilization on the Synthesis of Mesoporous Minerals and on the Removal of Heavy Metals.	Aakanksha Gaur	Nov 26, 2024
	Add new Web site: New Mexico Institute of Mining and Technology - New Mexico Bureau of Geology and Mineral Resources - Pumice and Pumicite in New Mexico.	Gloria Lotha	Oct 15, 2024
	Add new Web site: IOPscience - Journal of Physics Communications - Physical properties of mesoporous scoria and pumice volcanic rocks.	Gloria Lotha	Sep 05, 2024
	Add new Web site: Academia - Pumice article.	Yamini Chauhan	Jul 10, 2024
	Add new Web site: National Center for Biotechnology Information - PubMed Central - Pumice Characteristics and Their Utilization on the Synthesis of Mesoporous Minerals and on the Removal of Heavy Metals.	Aakanksha Gaur	Jan 19, 2024
	Add new Web site: WebMD - What Is a Pumice Stone?	Emily Rodriguez	Nov 22, 2023
	Add new Web site: Nature - Scientific Reports - Coastal ecological impacts from pumice rafts.	Gloria Lotha	Sep 26, 2023
	Add new Web site: Academia - Pumice as a remarkable substrate for the origins of life.	Gloria Lotha	Jul 31, 2023
	Add new Web site: Geology.com - Pumice.	Gloria Lotha	Feb 16, 2023
	Media added.	Amy Tikkanen	Aug 14, 2008
	Added new Web site: Volcano World - Pumice.	Dutta Promeet	May 28, 2008
	Added new Web site: Buzzle.com - Pumice Rock.	Dutta Promeet	May 28, 2008
	Added new Web site: U.S. Geological Survey - Pumice.	Dutta Promeet	May 28, 2008
	Added new Web site: Mineral Information Institute - Pumice.	Dutta Promeet	May 28, 2008
	Article revised and updated.	John P. Rafferty	Dec 08, 2006
	Article added to new online database.	The Editors of Encyclopaedia Britannica	Jul 20, 1998