• WordNet 3.6
    • n quartzite hard metamorphic rock consisting essentially of interlocking quartz crystals
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Webster's Revised Unabridged Dictionary
    • n Quartzite (Min) Massive quartz occurring as a rock; a metamorphosed sandstone; -- called also quartz rock.
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Century Dictionary and Cyclopedia
    • n quartzite A rock composed essentially of the mineral quartz. It is a rock of frequent occurrence, and often forms deposits of great thickness. Quartzite is rarely without a granular structure, either perceptible to the naked eye or visible with the aid of the microscope. Sometimes, however, this structure is with great difficulty perceptible. It is generally held by geologists that quartzite has resulted from the alteration of quartzose sand, pressure and the presence of siliciferous solutions having thoroughly united the grains of which the rock was originally composed. The quartzose material of which many veins are made up (material which must have been deposited from a solution) is not generally designated as quartzite, this sense being reserved for such quartz as is recognized by its stratigraphic position to have been formed from sedimentary material.
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Chambers's Twentieth Century Dictionary
    • ns Quartzite a common rock, usually white, gray, or rusty in colour, and composed of an aggregate of quartz-grains welded together
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Webster's Revised Unabridged Dictionary
Cf. F. quartzite,
Chambers's Twentieth Century Dictionary
Ger. quarz.


In literature:

Who would carve these lumps of quartzite when one could carve good oak?
"The Secret Places of the Heart" by H. G. Wells
A coarse-grained sandstone and quartzite cropped out in that part of the river situated between the two camps.
"Journal of an Overland Expedition in Australia" by Ludwig Leichhardt
So these quartzites are aslant, and though of great geologic thickness, they make but 800 feet of the wall.
"Canyons of the Colorado" by J. W. Powell
The quartzite of the Hills is well crystallized and heavy.
"Cave Regions of the Ozarks and Black Hills" by Luella Agnes Owen
Joe could see out a quartzite port.
"Space Tug" by Murray Leinster
Grooved axe of quartzitic rock.
"Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879" by James Stevenson
This final finish was achieved by the Quartzite Hammers (Class IV.).
"Stonehenge" by Frank Stevens
In Hesse and Thuringia, a quartzitic sandstone prevails in the lower part.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4" by Various
And now, when I am on the subject, I may point out that this hard and compact quartzite pebble was also once loose sand.
"The American Architect and Building News, Vol. 27, Jan-Mar, 1890" by Various
There is some gleaming white quartzite mixed with both these shales.
"The Book of the National Parks" by Robert Sterling Yard

In news:

The Tan-Tan figurine, apparently carved from a piece of quartzite rock, dates from the days of Homo erectus.
It turns out arrowheads can be made of argillite, chalcedony, chert/flint, diorite, hematite, jasper, rhyolite, siltstone, crystal quartz, quartz, and quartzite.
In the triplex penthouse's living area, a wall of Swiss quartzite rises along side Rodolfo Dordoni's sofa, Antonio Citterio's cocktail tables, and Alban- S bastien Gilles's rocking chair and ottoman.
In the living room, a Moroccan Middle Atlas rug from Souad Larusi warms gold-and-white quartzite floors from Stone Source.
In the bath, gray-green quartzite tile from American Slate Company ( www.americanslate.com ) covers the floor and some walls.