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Topic: Quartz (disambiguation)

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	Quartz - Encyclopedia, History, Geography and Biography
		A quartz geode consists of a hollow rock (usually with an approximately spherical shape) with a core lined with a bed of crystals.
		Quartz is one of the most common minerals of the continental crust and goes by a bewildering array of different names.
		One of the earliest uses for a quartz crystal was a phonograph pickup.
	www.arikah.com /encyclopedia/Quartz (877 words)

	quartz - Article and Reference from OnPedia.com
		A quartz geode consists of a hollow rock (usually with an approximately spherical shape) with a core lined with a bed of crystals.
		Quartz is also a type of piezoelectric crystal that creates electricity through a process called piezoelectricity when mechanical stress is put upon it.
		One of the earliest uses for a quartz crystal was a phonograph pickup.
	www.onpedia.com /encyclopedia/quartz (610 words)

	Quartz - the free encyclopedia (Site not responding. Last check: 2007-10-31)
		Quartz is a common constituent of granite, sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks.
		Some quartz crystal structures are piezoelectric and are used as oscillators in electronicdevices such as quartz clocks and radios.
		One of the earliestuses for a quartz crystal was a phonograph pickup.
	www.world-knowledge-encyclopedia.com /?t=Quartz (584 words)

	Quartz
		Quartz is a common constituent of granite, sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks.
		Quartz crystals are rotary polar (see rotary polarization) and have the ability to rotate the plane of polarization of light passing through them.
		Quartz is also a type of piezoelectric crystal that creates electricity through a process called piezoelectricity when mechanical stress is put upon it.
	www.wikipedia-mirror.co.za /wiki/Quartz (1210 words)

	Quartz Information Center - quartz countertops
		A quartz geode quartz quartz medicine halogen bulbs consists of a hollow rock (usually rutilated quartz smoky quartz with zodiac quartz an approximately spherical shape) with a core lined with a bed of crystals.
		Quartz is a common constituent of quartz infrared heating granite, sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks.
		Quartz is the most common material rose quartz cross identified as the mystical substance maban in Australian Aboriginal mythology.
	www.scipeeps.com /Sci-Chemistry_Topics_Pr_-_R/Quartz.html (711 words)

	Porphyry (Petrology) - LoveToKnow 1911
		The phenocrysts are orthoclase (and oligoclase), biotite, hornblende or augite; the ground-mass is principally alkali felspar with sometimes a little quartz.
		In a special group there are corroded blebs or porphyritic quartz: these rocks are called quartz-porphyrites, and are distinguished from the granite-porphyries by the scarcity or absence of orthoclase.
		The hornblende of the porphyrites is often green but sometimes brown, resembling that of the lamprophyres, a group from which the porphyrites are separated by their containing phenocrysts of felspar, which do not occur in normal lamprophyres.
	www.1911encyclopedia.org /Porphyry_(Petrology) (1438 words)

	Sand - Encyclopedia, History, Geography and Biography
		), usually in the form of quartz, which, because of its chemical inertness and considerable hardness, is quite resistant to weathering.
		Quartz sand that is recently weathered from granite or gneiss quartz crystals will be angular.
		It is called sharp sand in the building trade where it is preferred for concrete mixing, and in gardening where it is used as a soil amendment to loosen clay soils.
	www.arikah.com /encyclopedia/Sand (958 words)

	Quartz - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-31)
		A quartz geode consists of a hollow pebble (usually an approximately spherical shape), its core lined with a bed of crystals.
		Quartz is a common constituent of granite, sandstone and limestone.
		A non-crystalline (glass) form of quartz, called fused quartz, can also be produced, distinct from typical window glass.
	www.encyclopedia-online.info /Quartz (461 words)

	Rock crystal Information Center - crystal rock potpourri
		Quartz is a common constituent coleman crystal yard and rock shop jessieville arkansas of granite, guild wars crystal desert augury rock sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks.
		Quartz how did the crystal combine ippolita rock crystal necklace with the rock in the cavern is also a type of piezoelectric crystal that creates electricity through a process called piezoelectricity when mechanical stress rock crystal chandeliers south america is put upon it.
		One of the earliest uses for a quartz grade a rock crystal beads crystal was a phonograph crystal rock for plants pickup.
	www.scipeeps.com /Sci-Chemistry_Topics_Pr_-_R/Rock_crystal.html (785 words)

	Quartz - Wikipedia, the free encyclopedia
		Quartz is one of the most common minerals in the Earth's continental crust.
		Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology.
		The same principle is also used for very accurate measurements of very small mass changes by means of the quartz crystal microbalance.
	en.wikipedia.org /wiki/Quartz (784 words)

	Quartz (Site not responding. Last check: 2007-10-31)
		Quartz is the most abundant mineral on Earth (about 12% vol.).
		Reddish orange chalcedony, translucent\n}\nNot all varieties of quartz are naturally occurring.
		Erosion of pegmatites may reveal expansive pockets of crystals, known as "cathedrals." Quartz is a common constituent of granite, sandstone and limestone.
	encyclopedia.codeboy.net /wikipedia/q/qu/quartz.html (481 words)

	Quartz Summary
		Quartz can be found as giant crystals or small grains, and is the main component of most types of sand.
		Though quartz is clear and glassy in its large crystal form, called rock quartz, it also can be found in several shades of coloration, the most familiar being rose quartz (pink), smoky quartz (brown), and amethyst (purple).
		In a quartz timepiece, a small ring-shaped piece of crystal is made to vibrate at its natural frequency.
	www.bookrags.com /Quartz (2037 words)

	Crystal (disambiguation) - Wikipedia, the free encyclopedia
		In electronics, a crystal is a crystalline piece of a semiconductor used in a device, such as a crystal radio receiver, for its properties of electrical conduction.
		Crystal oscillator, in electronics, a device, often used in timekeeping, as in a quartz clock, and in radio transmission, which produces an alternating electric current stabilized by the mechanical resonance of a piezoelectric crystal, usually quartz.
		Lead crystal or crystal-glass, a form of glass with a high degree of transparency that usually consists of a high proportion of lead oxide.
	en.wikipedia.org /wiki/Crystal_(disambiguation) (325 words)

	Quartz Mineral -- Recommendations and Resources (Site not responding. Last check: 2007-10-31)
		In modern quartz clocks, the resonator is tuning fork shaped, laser-trimmed or precision lapped to vibrate at 32,768 Hz.
		Quartz 2D is the primary graphics library in Mac OS X, it supersedes QuickDraw which was used in earlier versions of the Mac OS, now known as "Classic".
		Quartz 2D is based on version 1.4 of the Adobe Portable Document Format (PDF — a universal file format that preserves all of the fonts, formatting, colors and graphics of any source document, regardless of the platform used to create it.) It is descended from NeXT's Display PostScript.
	www.becomingapediatrician.com /health/123/quartz-mineral.html (1546 words)

	Quartz - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-31)
		The exact date, place, and creator of the quartz oscillator are unknown to the public, as this information is classified.
		It is believed that it may eventually become public as the aftermath of the Cold War wears off.
		Today, one of the most ubiquitous piezoelectric uses of quartz is as a crystal oscillator—in fact these oscillators are often simply called "quartzes".
	www.knowledgehunter.info /wiki/Quartz (832 words)

	CalendarHome.com - Clock - Calendar Encyclopedia
		Time in these cases is measured in several ways, such as by the behaviour of quartz crystals, or the decay of radioactive elements.
		A clock face is the part of an analog clock that tells time through the use of a fixed numbered dial or dials and moving hand or hands.
		Battery operated digital clocks such as wrist watches use a quartz crystal oscillator for time keeping, whereas mains-powered clocks, such as bed-side alarm clocks, use typically the 50 or 60 hertz oscillation of AC power or a crystal oscillator as in a quartz movement.
	encyclopedia.calendarhome.com /Clock.htm (1713 words)

	Sand Summary
		One trip down a river is not enough to thoroughly round an angular grain of quartz; even a long sojourn on a beach, where grains are repeatedly tumbled by waves, does not suffice.
		Recycling time is on the order of 200 million years, so a quartz grain first weathered from granite 2.4 billion years ago may have gone through 10 or 12 cycles of burial and re-erosion to reach its present day state.
		The most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide), usually in the form of quartz which because of its chemical inertness and considerable hardness is quite resistant to weathering.
	www.bookrags.com /Sand (1628 words)

	Agate information - Search.com
		In the formation of an ordinary agate, it is probable that waters containing silica in solution -- derived, perhaps, from the decomposition of some of the silicates in the lava itself -- percolated through the rock and deposited a siliceous coating on the interior of the vapour-vesicles.
		Several vapour-vesicles may unite while the rock is viscous, and thus form a large cavity which may become the home of an agate of exceptional size; thus a Brazilian geode lined with amethyst and weighing 35 tons was exhibited at the Dusseldorf Exhibition of 1902.
		Many agates are hollow, since deposition has not proceeded far enough to fill the cavity, and in such cases the last deposit commonly consists of quartz, often amethyst, having the apices of the crystals directed towards the free space so as to form a crystal-lined cavity, or geode.
	domainhelp.search.com /reference/Agate (886 words)

	BriansPrediction.com® and BriansDreams.com® - Now ranked the #1 psychic in the world...With over 320 open missing ...
		Quartz is the most common material identified as the mystical substance
		Quartz is also a type of piezoelectric crystal that creates electricity through a process called
		One of the earliest uses for a quartz crystal was a
	www.briansprediction.com /dd/4087.htm (2164 words)

	Quartz (disambiguation) at AllExperts
		*Quartz (band), a heavy metal band from England
		*Quartz (Stargate), the primary mineral of the Stargate in the movie and the pilot television episode "Stargate".
		*Quartz clock, a descriptor applied to a type of watch or clock that relies on the mineral in its timekeeping mechanism
	en.allexperts.com /e/q/qu/quartz_(disambiguation).htm (155 words)

	Glass - Thagodz Wiki
		The major raw material is sand (or "quartz sand") that contains almost 100 % of crystalline silica in the form of quartz.
		Although it is almost pure quartz, it may still contain a small amount (less than 1 %) of iron oxides that would color the glass, so this sand is usually depleted before production to reduce the iron oxide amount to less than 0.05 %.
		What made Venetian Murano glass significantly different was that the local quartz pebbles were almost pure silica and were ground into a fine clear sand that was combined with soda ash obtained from the Levant, for which the Venetians held the sole monopoly.
	www.thagodz.com /search/wiki/?title=Glass (3580 words)

	Lava Information - Online Prescription Medication Directory
		This is caused primarily by the chemistry of the magma, which is high in silica, aluminium, potassium, sodium, and calcium, forming a polymerized liquid rich in feldspar and quartz, which is thus much more sticky than other magma types.
		A common feature of glassy rocks is the presence of rounded bodies (spherulites), consisting of fine divergent fibres radiating from a center; they consist of imperfect crystals of feldspar, mixed with quartz or tridymite; similar bodies are often produced artificially in glasses which are allowed to cool slowly.
		Phenocrysts of quartz (and of other minerals), instead of sharp, perfect crystalline faces, may show rounded corroded surfaces, with the points blunted and irregular tongue-like projections of the matrix into the substance of the crystal.
	www.prescriptiondrug-info.com /drug_information_online.asp?title=Lava (3652 words)

	Glass - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-31)
		Even though it is an almost pure quartz, still it may contain a little (<1%) of iron oxides that would color the glass, so this sand is usually enriched in the factory to reduce the iron oxide amount to <0.05%.
		Large natural single crystals of quartz are purer silicon dioxide, and they, upon crushing, are used for the high quality specialty glasses.
		For the most demanding applications, quartz glass is used, although it is very difficult to work.
	www.knowledgehunter.info /wiki/Glass (4205 words)

	Tell us about Quartz... (Site not responding. Last check: 2007-10-31)
		It has a hexagonal crystal structure made of trigonal crystallized silica (silicon dioxide, SiO2), with a hardness of 7 on the Mohs scale.
		Tridymite and cristobalite are high temperature polymorphs of SiO2 which occur in high silica volcanic rocks.
		Lechatelierite is an amorphous silica glass SiO2 which is formed by lightning strikes in quartz sand.
	gemstones.nowmore.net /Quartz.htm (964 words)

	Behm Quartz (Site not responding. Last check: 2007-10-31)
		Rock Crystal Clear, colourless Amethyst Purple, transparent Citrine Yellow to reddish orange, greenish yellow Rose quartz Pink, translucent, may display diasterism Milk quartz, or snow quartz White, translucent to opaque, may display diasterism Smoky quartz Brown, transparent Morion Dark-brown, opaque Carnelian Reddish orange chalcedony, translucent
		Quartz is the second most abundant mineral in the Earth 's crust.
		It has a hexagonal crystal structure made of trigonal crystallized silica (silicon dioxide, SiO 2), with ahardness of 7 on the Mohs scale.
	www.vermontreview.com /edge/9306-behmquartz.html (157 words)

	Citizen Quartz Watch (Site not responding. Last check: 2007-10-31)
		Citizenship is membership in a political community (originally a city but now a state), and carries with it rights to politicalparticipation; a person having such membership is a citizen.
		In modern timesthey are usually worn on the wrist, although before the 20th century most were pocketwatches, which had covers and were carried separately, often in a pocket, and hooked to a watch chain.
		Current watches are often digital watches, using a piezoelectric crystal, usually quartz, as an oscillator (see quartz clock).
	www.witchware.com /File/39196-Citizen.Quartz.Watch.Html (724 words)

	Crystal - Wikipedia, the free encyclopedia
		For other senses of this word, see crystal (disambiguation).
		In chemistry and mineralogy, a crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions.
		The word crystals originates from the Greek word "Krystallos" meaning clear ice, and once referred particularly to quartz, rock crystal.
	www.daveproxy.co.uk /cgi-bin/nph-proxy.cgi/010110A/687474703a2f2f656e2e77696b6970656469612e6f72672f77696b692f4372797374616c (834 words)

	Quartz (disambiguation) - TheBestLinks.com - Cryptography, Mac OS X, Public-key cryptography, Quartz clock, ... (Site not responding. Last check: 2007-10-31)
		Quartz (disambiguation) - TheBestLinks.com - Cryptography, Mac OS X, Public-key cryptography, Quartz clock,...
		Quartz (disambiguation), Cryptography, Mac OS X, Public-key cryptography...
		This is a disambiguation page, i.e., a navigational aid which lists other pages that might otherwise share the same title.
	www.thebestlinks.com /Quartz___28__disambiguation__29__.html (140 words)

	Red Quartz
		Red is a color at the lowest frequencies of light discernible by the human eye.
		Quartz is the second most abundant mineral in the Earth 's crust.
		It has a hexagonal crystal structure made of trigonal crystallized silica (silicon dioxide, SiO 2), with ahardness of 7 on the Mohs scale.
	www.lottery-news.net /dust33395-red_quartz.html (500 words)

	The quartz page
		Blood stains the walls of the cage where the deadly creatures are kept.
		As an extra bonus here are the top searched terms over the past month for quartz.
		Now you can see what everyone else is searching for in regards to quartz.
	www.infoformat.com /Neim-to-Colu/quartz.html (1233 words)

	Sand - Thagodz Wiki
		), usually in the form of quartz, which, because of its chemical inertness and considerable hardness, is resistant to weathering.
		Study of individual grains can reveal much historical information as to the origin, kind of transport, etc of the grain.
		It is called sharp sand in the building trade where it is preferred for concrete, and in gardening where it is used as a soil amendment to loosen clay soils.
	www.thagodz.com /search/wiki/?title=Sand (964 words)

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