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Topic: Pumice

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	Pumice - Wikipedia, the free encyclopedia
		Pumice is a light, porous type of pyroclastic igneous rock.
		Pumice varies in density according to the thickness of the solid material between the bubbles; many samples float in water.
		When used as an additive for cement, a fine-grained version of pumice called pozzolan is mixed with lime to form a light-weight, smooth, plaster-like concrete.
	en.wikipedia.org /wiki/Pumice (245 words)

	PUMICE - LoveToKnow Article on PUMICE (Site not responding. Last check: 2007-08-20)
		Pumices are most abundant and most typically developed from acid rocks; for which reason they usually accompany obsidians, in fact in.
		Rhyolite and trachyte pumices are white, contain 60 to 75% of silica and the specific gravity of the glass is 23 to v4; andesite pumices are often yellow or brown; while pumiceous basalts, such as occur in the Sandwich Islands, are pitch fl when perfectly fresh.
		Much pumice is also used nowadays in the form of a fine powder, produced by crushing the rock, and forms an ingredient of metal polishes and some kinds of soap.
	www.1911encyclopedia.org /P/PU/PUMICE.htm (909 words)

	great pacific pumice, lightweight, fill, geotechnical fill, soil amendment, potting soil
		Pumice is a volcanic rock composed of bubbles or vesicles in a glass matrix formed by the effervescence of gases and rapid cooling of molten granite during an eruption.
		Pumice is used as a hydroponics growing media, as an athletic field conditioner, for turfgrass aeration on golf greens and tees and as a carrier for fertilizer, pesticides, herbicides and fungicides.
		Chemically, Mt. Meager pumice is 66% silica and 16% alumina, with a pH of 7.0, MOHS hardness of 5.5, creamy white colour and a liquid absorption capacity of 40%.
	www.pumice.ca (681 words)

	Neighborhood Rocks: Pumice
		Pumice is mostly light gray or tan in color.
		Pumice is an igneous rock, because it formed from melted rock.
		Pumice is an extrusive igneous rock, because it formed from lava "extruded" onto the surface of the Earth.
	www.saltthesandbox.org /rocks/pumice.htm (346 words)

	Pumice (Site not responding. Last check: 2007-08-20)
		Pumice is the term applied to vesicular ejecta of feldspathic lava.
		Pumice has a lower density and a vitreous luster (i.e., looks like a broken glass bottle).
		Pumice deposit from a 1980 pyroclastic flow at Mount St. Helens.
	volcano.und.nodak.edu /vwdocs/vwlessons/tephra/part8.html (133 words)

	USGS Photo Glossary: Pumice
		Pumice is a light, porous volcanic rock that forms during explosive eruptions.
		Pumice is similar to the liquid foam generated when a bottle of pressurized soda is opened--the opening depressurizes the soda and enables dissolved carbon dioxide gas to escape or erupt through the opening.
		During an explosive eruption, volcanic gases dissolved in the liquid portion of magma also expand rapidly to create a foam or froth; in the case of pumice, the liquid part of the froth quickly solidifies to glass around the glass bubbles.
	volcanoes.usgs.gov /Products/Pglossary/pumice.html (154 words)

	Pumice on south Mediterranean - remnant of the Thera eruption? \| The Baheyeldin Dynasty
		Pumice is an unusually light rock due to the many bubbles inside it.
		The sedimentary stone that the pumice is embedded in is made of the exact same kind of sand that is on the coast there, hardening over the ages and composing this rock.
		Since pumice originates from volcanic eruptions, it is certain that an event like the Thera volcanic eruption is the source of this pumice.
	baheyeldin.com /science/pumice-on-mediterranean-coast.html (834 words)

	Pumice (Site not responding. Last check: 2007-08-20)
		Pumice is a very porous, frothlike volcanic glass that has long been used as an abrasive in cleaning, polishing, and scouring compounds.
		Pumice is pyroclastic igneous rock that was almost completely liquid at the moment of eruption and was so rapidly cooled that there was no time for it to crystallize.
		The cavities (vesicles) of pumice are sometimes rounded and may also be elongated or tubular, depending on the flow of the solidifying lava.
	geology.csupomona.edu /alert/igneous/pumice.htm (328 words)

	Pumice Rocks (Site not responding. Last check: 2007-08-20)
		Pumice rocks are igneous rocks which were formed when lava cooled quickly above ground.
		Pumice is actually a kind of glass and not a mixture of minerals.
		Ground to a powder, it is used as an abrasive in polish compounds and in Lava© soap.
	www.fi.edu /fellows/payton/rocks/expert/pumice.htm (84 words)

	Pumice Stones, black how to make planter foot cleaning clay ground, sales are formed making planter callous ...
		Pumice stone is basically a light and porous type of rock.
		Pumice stone is formed during volcanic eruptions when lava is ejected.
		Pumice stone are so beautiful in color that some people use Pumice stone as decorative pierces.
	www.garmentsonclick.com /pumice-stone.html (249 words)

	pumice
		Coarser-grained rock, with fewer and larger air spaces, is called scoria; it is usually associated with dark-colored igneous rocks of diorite or gabbro composition.
		Pumice is used chiefly as an abrasive and is included in many scouring preparations.
		Because of its air chambers, pumice has a very low density and has been observed blowing off volcanic islands in strong winds.
	www.factmonster.com /ce6/sci/A0840515.html (245 words)

	Mt. Meager Pumice Products
		Pumice stones have been used since early Roman times to cleanse and beautify the skin.
		Our Pumice stone was hand selected from the volcanic site at Mt. Meager from the area of deposit located nearest to the volcano vent where the Pumice is naturally purest.
		Our testing of the cosmetic stones locally has resulted in a favourable response due to the creamy white colour, natural shape, and particularly to their effectiveness in cleansing and exfoliating hardened skin from the hands, elbows, heels and soles of the feet because of the balance of abrasiveness, softness and integrity of the material.
	www.canadianpumice.com (200 words)

	Pumice (Site not responding. Last check: 2007-08-20)
		Pumice is a very light, porous igneous rock that is formed during volcanic eruptions.
		The texture of pumice is rough and has many hollows and cavities.
		Sometimes a volcano erupts underwater and the pumice that is produced often floats away.
	www.ivyhall.district96.k12.il.us /4th/kkhp/RocksandMinerals/pumice.html (113 words)

	Volcanic Phenomena at Pompeii
		The pyroclastic flows of the Peléan phase at Pompeii were the primary cause of volcanic damage to walls, however the air-fall pumice and ash fall during the Plinian phase was also significant since the deposits collapsed roofs and buried low structures, shielding them from the effects of the pyroclastic flow that followed.
		This phase lasted approximately eighteen hours, when approximately 2.5 meters (8.2 feet) of pumice stones fell on Pompeii, an initial layer of 1.3 to 1.4 meters (4.3 to 4.6 feet) of white pumice, followed by 1.1 to 1.3 meters (3.6 to 4.3 feet) of denser gray pumice.
		The average diameter of the pumice fallout was 1 cm (0.4 in), and posed little direct threat to human life.
	urban.arch.virginia.edu /struct/pompeii/volcanic.html (1301 words)

	Become.com - Shop results for pumice
		Description: This oblong pumice brush with contoured handle is ideally designed for all your manicure and pedicure needs.
		Use Pumice stone to remove calluses and to smooth rough dry skin.
		Pumice Acne Scrub is a highly effective, medicated foaming cleanser for the treatment of acne, razor bumps...
	www.become.com /shop?q=pumice (127 words)

	Malar Pumice
		According to experiments conducted on Malar Pumice stone, and as admitted by experts an consumers, compared to other types of construction meterials and other types of Pumice stones, Malar Pumice stons enjoy a better quality, a better yield and are more appropriate to use.
		besides the various positive effect of Malar Pumice in raising the guality of construction works, using this mineral substance is cost effective and prevents redundant ecpenses.
		Pumice stones are found in oval - shaped pieces, 50 to 100
	www.malarpumice.com /whatispumicetxt.htm (264 words)

	Volcano Dictionary: P - EnchantedLearning.com
		Pumice is a light-weight, spongy rock that is formed in explosive volcanic eruptions.
		Pyroclastic (meaning "fire fragmented") refers to broken-up rocks, pumice, ash, and other bits of material that are formed in a volcanic eruption.
		A pyroclastic flow is an avalanche of pyroclastic materials (broken rocks, pumice, and ash) and hot gases that erupts from within a volcano.
	www.enchantedlearning.com /subjects/volcano/glossary/indexp.shtml (758 words)

	pumice articles on Encyclopedia.com
		pumice PUMICE [pumice], volcanic glass formed by the solidification of lava that is permeated with gas bubbles.
		Usually found at the surface of a lava flow, it is colorless or light gray and has the general appearance of a rock froth.
		A shipping point for sheep and cattle, it produces pumice, lumber, and concrete.
	encyclopedia.com /searchpool.asp?target=pumice&Submit.x=22&Submit.y=7 (439 words)

	California Lightweight Pumice, Inc.
		Pumice is a light, porous igneous rock that is formed during volcanic eruptions.
		The texture of pumice resembles a sponge with its many hollows and cavities.
		Because of its porous nature, pumice is a lightweight material that is an ideal
	www.clppumice.com (190 words)

	Hess Pumice Products, Inc. - Home Page
		We are located in Southeastern Idaho near the community of Malad, and are a mining operation and processing facility specializing in the extraction and refining of high quality pumice.
		Hess Pumice has a stable source of supply, and an exclusive focus on producing and distributing precisely controlled industrial grades of pumice.
		Hess Pumice is favored by nature with a vast reserve of pumice of as high a quality as any available on earth and is dedicated to the highest standards of refinement, accuracy of grading, and quality control.
	www.hesspumice.com (287 words)

	Pacific Pumice Supplies
		The resulting upheaval gave way to an inexhaustible supply of pure pumice, which is mined by the Cameron family at Cameron's Quarry on the family farm in Otamarakau in the Bay of Plenty.
		Pacific Pumice® is an exceptional product with a great future.
		Results from scientific analysis judge it ideal for a large number of uses and the massive deposits of volcanic material still available mean there is enough pumice remaining for many generations to resource.
	www.pumice.co.nz (105 words)

	SwissEduc: Stromboli Online - Photoglossary
		Pumice is a very light, porous volcanic rock that forms during explosive eruptions.
		All types of magma (basalt, andesite, dacite, and rhyolite) can form pumice, but it is usually associated with acidic magmas (e.g.
		Pumice is mined as an additive to abrasive materials.
	www.swisseduc.ch /stromboli/glossary/pumice-en.html (105 words)

	BK Pumice
		Whether it's tackling tough stains on porcelain sinks and toilet bowls, or as a pedicure exfoliate to aid in removing dry, rough skin.
		They are made of the finest mined pumice available and 100% guaranteed.
		Once you've tried them, we're sure you'll agree that they are the finest pumice stones made.
	www.bkpumice.com (134 words)

	Lombok Pumice Stone
		We are processing of Pumice Stone processed by screen material product and export quality industrial supply companies originally from Lombok Island Indonesia, materials and supplies used in the construction and maintenance industry, Quarries, Fabricators or Exporters of natural stone from a specific Indonesia of origin Lombok island.
		Business sites relating to the extraction and processing of Industrial Minerals which typically include quarried pumice stone, Pumice Stone is building stone made from concrete.
		We have pumice quarry on Lombok Island Indonesia supporting to continuous supply and good quality of pumice stone at competitive prices.
	www.geocities.com /lombok_pumice_stone (217 words)

	Untitled (Site not responding. Last check: 2007-08-20)
		Pumice has cooled too quickly for minerals to form.
		Chemical composition, however, will be from the bottom of Bowen's Reaction series (i.e.
		Pumice is a vesicular, foamy, very light weight, light colored rock formed by abundant, rapid gas escape during formation.
	csmres.jmu.edu /geollab/Fichter/IgnRx/Pumic-1A1.html (41 words)

	pumice - The Columbia Encyclopedia, Sixth Edition - HighBeam Research (Site not responding. Last check: 2007-08-20)
		PUMICE [pumice], volcanic glass formed by the solidification of lava that is permeated with gas bubbles.
		Deposits are found in volcanic areas throughout the world.
		Our archive contains millions of documents from thousands of sources and goes back over 23 years.
	www.highbeam.com /doc/1E1:pumice/pumice.html?refid=ip_hf (192 words)

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