Definition of Quartz

1. Noun. Colorless glass made of almost pure silica.




2. Noun. 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 impurities.

Definition of Quartz

1. 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.

Definition of Quartz

1. Noun. (minerology) The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO2. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment. ¹

¹ Source: wiktionary.com

Definition of Quartz

1. a mineral [n -ES]

Medical Definition of Quartz

1. 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 varieties include: amethyst, violet; citrine and false topaz, pale yellow; rock crystal, transparent and colourless or nearly so; rose quartz, rosecoloured; smoky quartz, smoky brown. The chief crypto-crystalline varieties are: agate, a chalcedony in layers or clouded with different colours, including the onyx and sardonyx; carnelian and sard, red or flesh-coloured chalcedony; chalcedony, nearly white, and waxy in luster; chrysoprase, an apple-green chalcedony; flint, hornstone, basanite, or touchstone, brown to black in colour and compact in texture; heliotrope, green dotted with red; jasper, opaque, red yellow, or brown, coloured by iron or ferruginous clay; prase, translucent and dull leek-green. Quartz is an essential constituent of granite, and abounds in rocks of all ages. It forms the rocks quartzite (quartz rock) and sandstone, and makes most of the sand of the seashore. Origin: G. Quarz. Source: Websters Dictionary (01 Mar 1998)

Quartz Pictures

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Lexicographical Neighbors of Quartz

quartics
quartier
quartiers
quartile
quartiles
quartine
quartino
quartinos
quartirolo
quartisect
quarto
quartos
quartridge
quartridges
quarts
quartz (current term)
quartz-crystal clock
quartz-diorite
quartz battery
quartz clock
quartz clocks
quartz crystal
quartz halogen lamp
quartz halogen lamps
quartz lamp
quartz mill
quartz mining
quartz oscillator
quartz schist

Literary usage of Quartz

Below you will find example usage of this term as found in modern and/or classical literature:

1. Bulletin by North Carolina Dept. of Conservation and Development, North Carolina Geological Survey (1883-1905), North Carolina Geological and Economic Survey (1907)
"quartz AND OPAL. sometimes with great complexity (PI. VI, A). They have furnished the subject for several monographs on the crystallography of quartz, ..."

2. Report by Tasmania Dept. of Mines (1897)
"Seeing that quartz porphyry is so widely used in England for compact granitic ... to connue the terms felsite and quartz felsite to devitrified acid lavas. ..."

3. Report (1913)
"quartz forms streaks running through the coarse grained. ... In one specimen an area, 1.0 mm. in diameter, of fine grained quartz encloses an isolated ..."

4. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"Many quartz crystals contain small cavities partly filled with liquids, generally water, ... The cryptocrystalline varieties of quartz include chalcedony, ..."

5. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"Many quartz crystals contain small cavities partly filled with liquids, generally water, ... The cryptocrystalline varieties of quartz include chalcedony, ..."

6. Fieldiana by Field Museum of Natural History, Chicago Natural History Museum, Field Columbian Museum (1895)
"quartz and pyrites, ore from the Triumfo mine, near Ibague." "390. [E 1198. ... The quartz contains pyrite and blende in about equal quantities. "391. ..."

7. The Data of Geochemistry by Frank Wigglesworth Clarke (1908)
"In recent lavas quartz occurs but rarely. In some cases, however, quartz has been observed in basalts—that is, in rocks which are capable of assimilating, ..."

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