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Quartz (from German Quarz) is the most abundant mineral in the Earth's continental crust (although feldspar is more common in the world as a whole). It is made up of a lattice of silica ( oxygen: 2) tetrahedra. Quartz has a hardness of 7 on the Mohs scale and a density of 2.65 g/cm³.

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Quartz_92grXXL.jpgQuartzRose.jpgquartz-dblterm.jpg
quartz cluster.jpgcluster-quartz.jpgtitanium quartz wire 1.JPG
quartz2.jpgquartz3.jpgQuartzRoseEmaEgg.jpg

Wikipedia about quartz

Quartz (from German Quarz) is the most abundant mineral in the Earth's continental crust (although feldspar is more common in the world as a whole). It is made up of a lattice of silica ( oxygen: 2) tetrahedra. Quartz has a hardness of 7 on the Mohs scale and a density of 2.65 g/cm³.

Crystal habit

Quartz belongs to the rhombohedral crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. In nature quartz crystals are often twinned, distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form in a 'bed' that has unconstrained growth into a void, but because the crystals must be attached at the other end to a matrix, only one termination pyramid is present. A quartz geode is such a situation where the void is approximately spherical in shape, lined with a bed of crystals pointing inward.

Varieties

Pure quartz is colorless or white; colored varieties include rose quartz, amethyst, smoky quartz, milky quartz, and others. Quartz goes by an array of different names. The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). Chalcedony is a generic term for cryptocrystalline quartz. The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline.

Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties. This does not always hold true.

Image:Tigers eye crystal444.jpg|

Tiger's eye
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Rose quartz
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Milk quartz
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Rutilated quartz crystal
Image:CoralPinkSandDunesSand.JPG|Quartz sand from Coral Pink Sand Dunes State Park, Utah. These have a hematite coating which provides the orange color. Scale bar is 1.0 mm.

Synthetic and artificial treatments

Synthetic%20quartz%20crystal.jpg

Due to natural quartz being so often twinned, much of the quartz used in industry is synthesized. Large, flawless and untwinned crystals are produced in an autoclave via the hydrothermal process; emeralds are also synthesized in this fashion. While these are still commonly referred to as quartz, the correct term for this material is silicon dioxide.

Search results for Quartz

Quartz Properties

Semiconductor Grade Fused Quartz Tubing ... Quartz tubing is available in a full range of sizes, including diameters of 400mm and larger. ...www.quartz.com/gedata.html

Quartz (graphics layer) - Wikipedia, the free encyclopedia

... Core OpenGL • Quartz 2D • Core ... Quartz specifically refers to a pair of Mac OS X ... of this vertical nature, Quartz is often interchanged synonymously ...en.wikipedia.org/wiki/Quartz_(graphics_layer)

Quartz and Zoisite (tanzanite)

Quartz has no cleavage and fails by brittle, conchoidal fracture; the fracture ... sometimes you can find star rose quartz which has inclusions ...socrates.berkeley.edu/~eps2/wisc/Lect13.html

National Scientific Company - Quartz Tube, Tubing & Rod

National Scientific Company, Authorized Momentive GE Fused Quartz Tube, Tubing & Rod Distributor/Fabricator. ... Furnaces for Quartz and Borosilicate Annealing ...www.quartz.com/

Quartz Mineral Data

General Quartz Information. Chemical Formula: ... Flint - microcrystalline quartz. Hornstone - flint. Jasper - red or brown chalcedony ... Quartz Epistilbite ...www.webmineral.com/data/Quartz.shtml

Images found for Quartz

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News about Quartz

Afghanistan: Paris Match pictures 'promoting Taliban'

Guardian UnlimitedA Paris Match photospread of Taliban fighters posing in the uniforms of dead French soldiers has sparked controversy. By Angelique Chrisafis in Parishttp://www.guardian.co.uk/world/2008/sep/05/afghanistan.fran...

Three held after Parktown robbery

Independent OnlinePolice say they found the three men in possession of an unlicensed Ruger special revolver with one round of live ammunition and are expected to appear in court.http://www.iol.co.za/widgets/rss_redirect.php?artid=nw200809...

Gap in cancer survival rates between deprived and affluent areas of country

Guardian UnlimitedLower survival rates in 'spearhead' primary care trust areas than those in more affluent areashttp://www.guardian.co.uk/society/2008/sep/05/health.cancer?...

Business Brief

The Colony Courier-LeaderA grand opening event marking the diversification will be from 4 to 8 p.m. Friday and from 10 to 4 p.m. Saturday at the store, 7336 Main St. There will be free chair massages, door prizes, and refreshments.http://www.colonyleader.com/articles/2008/09/05/the_colony_c...

Three held after Parktown robbery

Cape ArgusThree men were arrested after they allegedly robbed a woman at gunpoint in Parktown, Johannesburg police said on Friday. Spokesprson Captain Bhekizizwe Mavundla said the men, aged between 22 and 33, held up the woman in the vicinity of Peter Roos park on Thursday afternoon and stole her cellphone.http://www.capeargus.co.za/?fSectionId=3571&fArticleId=nw200...

News about Quartz

Ice chunk falls through roof, hits woman in bed

Washington Post ... said she's glad to be alive after a piece broke off and hit her on the forehead. The ice left Foster with a large bump on her head and holes in the roof and bedroom ceiling. Foster said the ice has a slightly fishy smell and looks like quartz. ___ ... http://www.washingtonpost.com/wp-dyn/content/article/2008/10...

Your Place: Shellac-based primer can stop wood 'bleeding'

Philadelphia InquirerAnother advertisement is for an Eden- Pure quartz infrared portable heater. She doesn't have the money to waste on things that don't work. A: Since I don't have the facilities to do so, I have not tested either product. Consumer columnists at ... http://www.philly.com/inquirer/columnists/20081010_Your_Plac...

Swatch chair down 3-4 bln Swiss francs in crisis

ReutersThe outspoken Hayek is generally credited with rescuing the Swiss watch industry from collapse in the 1980s after low-cost Japanese quartz timepieces obliterated sales. Lebanese-born, he is among 7,642 multimillionaires living in Switzerland, the ... http://www.reuters.com/article/lifestyleMolt/idUSTRE4992H220...

Counter intuitive

Baltimore SunUniform look, but quartz can provide depth and added color. Price: $45 and up per square foot. Brands include Silestone and Zodiaq. MARBLE Pro: Classic; eye-catching. Con: Soft stone stains, scratches, chips and etches; requires cleaning spills ... http://www.baltimoresun.com/business/realestate/bal-re.count...

Chunk of Ice Mysteriously Falls From Sky, Punching Hole in ...

FOX News ... glad to be alive after a piece broke off and hit her on the forehead. The ice left the 66-year-old grandmother with a large bump on her head and holes in the roof and bedroom ceiling. She says the ice has a slightly fishy smell and looks like quartz.http://www.foxnews.com/story/0,2933,435363,00.html

Search results for Quartz

Caesarstone – Quartz Countertops | Quartz Countertops for Kitchen ...

Quartz Countertops for Kitchen Counters, Kitchen Remodeling, Bathroom Vanity, Custom Quartz Countertops – Safe, Durable, Attractive Countetops, Quartz Surfaces by Caesarstonehttp://www.caesarstoneus.com/

National Scientific Company - Quartz Tube, Tubing & Rod

National Scientific Company, Authorized Momentive GE Fused Quartz Tube, Tubing & Rod Distributor/Fabricator.http://www.quartz.com/

Quartz: Quartz mineral information and data.

M>Quartz Group Quartz is the most common mineral found on the surface of the Earth. A significant component of many igneous, metamorphic and sedimentary rocks, this natural ... http://www.mindat.org/min-3337.html

Quartz Music - Classical CDs, MP3 Downloads

Quartz Music. Classical music CDs. MP3 download. Free streaming audio. Artists. Composers.http://www.quartzmusic.com/

Quartz Mineral Data

Mineral Specimens] [Mineral Locations] Greenside Minerals Newest website on the Internet for top quality, affordable minerals from around the Worldhttp://www.webmineral.com/data/Quartz.shtml
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Videos found for Quartz

Healing with Quartz - video

Healing with Quartz - videoQuartz is a versatile, all-purpose healing stone believed to enhance the properties of other crystals.Video - Video

Holmes HQH307 Radiant Quartz Heater...

Holmes HQH307 Radiant Quartz Heater Tower Product Reviews & Consumer Reports in VideoBask in instant penetrating heat with this large floor heater. Thanks to its patented MaxFlow fan system, the heater radiates immediate warmth without causing a draft, and because...Flash - Video

Cut Copy: Voice In Quartz

Cut Copy: Voice In QuartzFrom the album In Ghost ColoursMP3 - Video

Apophyllite, Quartz & Mordenite - R...

Apophyllite, Quartz & Mordenite - Rock VideoLarge crystal comprised of apophyllite, Quartz & mordenite.Flash - Video

MCM036 - Blue Moon Quartz, Neon Blu...

MCM036 - Blue Moon Quartz, Neon Blue Apatite RingBuy Now! http://www.jewelrytelevision.com/index.aspx?tid=21847&product_id=MCM036&mcid=XSN0015000133 10kt 5.00ct Blue Moon Quartz And .45ctw Neon Blue Apatite RingFlash - Video

Videos found for Quartz

quartz.avi

quartz.aviTemperature-induced Phase Transition Sequence of Quartzavi: 0.2 MB w:525px - h:425px

quartz2.mov

quartz2.movSection of quartz cut parallel to the c axis being heated from a point at its centre (video)quicktime: 0.6 MB w:384px - h:288px

quartz.mov

quartz.mov Quartz file size - 1.04Mquicktime: 0.9 MB w:640px - h:480px

quartz 2

quartz 2quartz 2 1 min 18 sec - Dec 26, 2006 ma dadounetteflash: 0 MB w:320px - h:242px

COMPAGNIE THEATRALE DU QUARTZ Sava...

COMPAGNIE THEATRALE DU QUARTZ  Savannah Bay  , Isabelle SADOYAN...La COMPAGNIE THEATRALE DU QUARTZ joue un extrait de Savannah Bay de Marguerite DURAS dans une mise en scène de Catherine SERMET au théâtre de l'Iris à Villeurbanne. Interview d'Isabelle ...wmv: 0 MB w:1024px - h:768px

Answers for Quartz

skatergurl

How do I find out how much my quartz crystal cluster is worth?

skatergurlcheergirl, There are a lot of things that determine how much a mineral specimen is worth. One of the important factors is how rare the mineral is... in your case, I'm afraid quartz is the most comm...
Carlos

How do you fix a quartz pocke twatch that has stopped ticking?

CarlosGet a new battery. Don't replace the battery at home, though, since there are low pressures inside the watch that will not let you open it without potentially damaging it. Buy a battery and take the w...
?Mama to a rockstar?

Where can I find the current price of quartz crystal?

?Mama to a rockstar?If it was perfectly transparent then you could probably sell it on ebay. Some of those crystal power loonies would jump at it. Clear quartz crystal used to be worth money because it was used to make ...
ndvdulmstk

Sci. & Tech. Buffs: How is electricity harnessed from quartz and do other crystals have this quality?

ndvdulmstkSome crystals are pyroelectric, which means that if the crystal (sliced in a particular crystallographic orientation) is heated up, it causes the crystal structure to deform and become an electric dip...
epiphany

What does it mean to have EXCESS amounts of quartz in yard?

epiphanyDon't they find gold veins in and near quarts? Quartz is also meant to vibrate at even and can be quite therapeutic. You could also rake it up and sell it for $20 a bag for gardens etc

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