A material frequently used in projectile points and other artifacts. When quartz is clear and colorless it is called rock crystal; milky wuartz is milky white; smoky quartz is clouded a brown color; rose quartz is a pale red color; sugar quartz is the color of brown sugar.
The most common of stones, used for decoration since the Classical period. When free from impurities, it is a colourless rock crystal; other forms most commonly used as gemstones since the 19thC include the amethyst in all shades of violet, the cairngorm in yellow and brown, and the yellow citrine which is often wrongly referred to as topaz. The ph â€¦...
Code-name for a tablet-like, quarter-VGA portrait screen size, pen-based, reference design.
Quartz is a common crystalline mineral. Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
- a hard glossy mineral consisting of silicon dioxide in crystal formFound on http://www.webdictionary.co.uk/definition.php?query=quartz
(SiO2) The most common silica mineral.
Found on http://www.quartznall.co.uk/azhealthguide.htm
Photograph of a quartz molecular model, courtesy of Indigo® Instruments.Found naturally as faceted crystals. Its birefringent properties are used in the production of optical quarter-wave plates and polarizers. A mineral whose primary component is silicon dioxide (SiO2
). Its colour and other aspects of its appearance depended on the imp...Found on http://www.diracdelta.co.uk/science/source/q/u/quartz/source.html
[ German quarz
A form of silica, or silicon dioxide (SiO 2
), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying ...Found on http://www.encyclo.co.uk/webster/Q/6
<chemical> A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colourless and transparent, but sometimes also yellow, brown, purple, green, and of other colours; also in cryptocrystalline massive forms varying in colour and degree of transparency, being sometimes opaque. ... The crystalline varieti...Found on http://www.mondofacto.com/facts/dictionary?quartz
a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impuritiesFound on http://wordnetweb.princeton.edu/perl/webwn?s=quartz
• (n.) A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.Found on http://thinkexist.com/dictionary/meaning/quartz/
Tungsten-Halogen lights or lighting units. The name is derived from the material which encloses the lighting element. (Lighting)Found on http://www.filmland.com/glossary/Dictionary.html#A
A hard mineral, that is a crystalline form of silica (silicon dioxide, SiO2
); it is colorless when pure ('rock crystal'). Quartz is a constituent of many rocks, especially igneous rocks such as granite and quartzite, metamorphic rocks such as gneisses and schists, an...Found on http://www.daviddarling.info/encyclopedia/Q/quartz.html
quartz, one of the commonest of all rock-forming minerals and one of the most important constituents of the earth's crust. Chemically, it is silicon dioxide, SiO2. It occurs in crystals of the hexagonal system, commonly having the form of a six-sided prism terminating in a six-sided pyramid; the cry...Found on http://www.infoplease.com/ce6/sci/A0840732.html
Quartz is a very widespread mineral which occurs as an important constituent of igneous rocks which have an excess of silica. Very resistant to mechanical and chemical attack. Massive, fine grained types are called jasper, chert, flint, agate. Coarse crystalline types called amethyst, rose quartz etc. Quartz has the formulae SiO2 and a relative har...Found on http://www.probertencyclopaedia.com/browse/HQ.HTM
Type: Term Pronunciation: kwōrts Definitions: 1. A crystalline form of silicon dioxide used in chemical apparatus and in optic and electric instruments.Found on http://www.medilexicon.com/medicaldictionary.php?t=74644
Crystalline form of silica SiO2
, one of the most abundant minerals of the Earth's crust (12% by volume). Quartz occurs in many different kinds of rock, including sandstone and granite. It ranks 7 on the Mohs scale of hardness and is resistant to chemical or mechanical breakdown. Quartzes vary according to the size and...Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015295.html
Quartz specifically refers to a pair of OS X technologies, each part of the Core Graphics framework: Quartz 2D and Quartz Compositor. It includes both a 2D renderer in Core Graphics and the composition engine that sends instructions to the graphics card. Because of this vertical nature, Quartz is often interchanged synonymo...Found on http://en.wikipedia.org/wiki/Quartz_(graphics_layer)
Quartz is a common mineral. Quartz may also refer to: ...Found on http://en.wikipedia.org/wiki/Quartz_(disambiguation)
Quartz is the second most abundant mineral in the Earth`s continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz, several of which are semi-precious gemstones. ....Found on http://en.wikipedia.org/wiki/Quartz
A watch whose movement is based on the vibrations of a minute piece of crystal that can be activated by a battery or lightFound on http://www.saffronart.com/sitepages/jewelry/glossary.aspx
Silicon dioxide occurring in colorless and transparent or colored hexagonal crystals and also in crystalline masses. One of the most common minerals, the chief constituent of quartz-based stone and granite.Found on http://www.selectstone.com/architectural-resources/stone-glossary/
A silicon dioxide mineral that occurs in colorless and transparent or colored hexagonal crystals and also in crystalline masses. One of the most common minerals is the chief constituent of sandstone.Found on http://www.contractorschoolonline.com/Masonry-Glossary.aspx
Silicon dioxide (Si02) occurring in hexagonal crystal form.Found on http://www.pebblejunction.com/glossary.html
One of the most abundant minerals in the Earth's crust, chemical formula is SiO2, forms six-sided crystals and has no cleavage. It has a moh's hardness of 7. It has many varieties including Amethyst, Citrine, Smokey Quartz, Rose Quartz, Chalcedony, and Tiger's eye among others. Chalcedony in particular has many sub-varieties. ^topFound on http://www.inlandlapidary.com/user_area/lapidary_terms.asp
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