FLUORITE

flooˈərīt or fluorsparflooˈərspär, mineral appearing in various colors, e.g., green, yellow-brown, rose, and red. Chemically, it is calcium fluoride, CaF2. Its crystals, commonly cubic, are transparent or translucent and under certain conditions exhibit fluorescence. The mineral also occurs in granular and massive forms. Fluorite is found in various parts of the world, especially in England, Germany, Mexico, and in Kentucky and Illinois in the United States. Its chief use is as a flux in metallurgy, but it is also employed in the preparation of hydrofluoric acid and in the manufacture of opal glass and enamel; some of its colorless crystals are used for making lenses and prisms.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Fluorite
We found: 161 results
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books on: Fluorite  - 125 results

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1.
Earth Science Demystified
Book by Linda Williams; McGraw-Hill, 2004
Subjects: Earth Sciences--Popular Works
2.
From the Life of a Researcher
Book by William Weber Coblientz; Philosophical Library, 1951
Subjects: Coblientz, William W--(William Weber)--1873-1962
3.
The Ascent of Chiefs: Cahokia and Mississippian Politics in Native North America
Book by Timothy R. Pauketat; University of Alabama Press, 1994
Subjects: Cahokia Mounds State Historic Park (Ill.), Chiefdoms, Mississippian Culture
...Other Tools 149 6.3. Large Bifacial Chert Adze Blades and Ramey Knives 150 6.4. Quartz, Fluorite, and Plagioclase Crystals 156 6.5. Paried One-Tailed t -tests of Galena and Hematite 158...
4.
The Physics of Experimental Method
Book by H. J. J. Braddick; Chapman & Hall, 1954
Subjects: Physics--Laboratory Manuals
5.
A Dictionary of Astronomy
Book by Ian Ridpath; Oxford University Press, 1997
Subjects: Astronomy--Dictionaries
...typical achromatic lens. Apochromats usually have at least three optical * elements, made from different types of glass. * Fluorite has become a popular material for apochromats, giving virtually perfect colour correction with only two elements, but at...
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journal articles on: Fluorite  - 4 results

 
 
1.
Commentary: Neandertals and the Thyroid Gland; the Selenium Connection
Journal article by Harold D. Foster; The Geographical Review, Vol. 92, 2002
Subjects: Neanderthals--Physiological aspects, Thyroid diseases
...famous "Derbyshire neck," an enlargement of the thyroid gland that looks like a swollen neck, formerly found in inhabitants of fluorite (calcium fluoride) areas in central England (Hetzel 1989). Indeed, it has been argued that, in China, goiter is promoted by...
2.
Running on Empty Mongolia's Economic Crash
Journal article by Aaron Mattis; Harvard International Review, Vol. 31, 2009
Subjects: Economic conditions--Forecasts and trends, External debts--Forecasts and trends, Mongolia--Economic aspects, Mongolia--International aspects, Mongolia--Natural resources, Mongolia--Political aspects
...Mongolia has one way out of this downward cycle of poverty: resource development. Vast unexplored reserves of gold, copper, coal, fluorite, and uranium continue to intrigue international investors. Chief among these untapped reserves is the Oyu Tolgoi mine, which...
3.
North Korean Chuch'E: the Political Economy of Independence
Journal article by Gordon White; Bulletin of Concerned Asian Scholars, Vol. 7, 1975
Subjects: Asia
...the world in both available deposits and production of such crucial minerals as gold, tungsten, magnesite, molybdenum and fluorite. It also has substantial deposits of asbestos, aluminum, chromium, copper, lead, silver, zinc, nickel, iron ore and coal...
4.
Cultural Collecting Fever in New Mexico: Figurines and Governor L. Bradford Prince
Journal article by Patricia Fogelman Lange; Journal of the Southwest, 1998
Subjects: Art, Art reproductions, Art--Reproduction, Native American art--Research, Native Americans, Native North Americans
...case. Such fetishes have been seen on altars at Hopi and Zuni. Jeancon (1923: plate 56), pictured fetishes made from gypsum, fluorite, pottery, selenite crystal, and even from black earth and grease. In "New Mexico Stone Idols" (SR AC), Prince described the...


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magazine articles on: Fluorite  - 8 results

       More magazine Results: 1-8 >>  
 
1.
Botswana: Potrait of Africa's Best Economy
Magazine article by Barry Baxter; African Business, October 2006
Subjects: Botswana--Demographic aspects, Botswana--Economic aspects, Economic development--Analysis, Economic development--Botswana, Gross domestic product--Forecasts and trends
...gravel. Clay is mined near Lobatse for the domestic brick industry. Other minerals known to exist in Botswana include agates, fluorite, kyanite, silver, antimony, lead, graphite, limestone, talc, gypsum, uranium, chromite, iron, platinum, zinc, feldspar and...
2.
A Night Out
Magazine article by Harriette Cole; Ebony, Vol. 64, December 2008
Subjects: Clothing, Clothing and dress
...drama to both of your looks--a fitted jacket with shine for him, a plunging V-neck pleated dress for her. On Grisel: Rainbow fluorite and amethyst stone earrings, Siman Tu, $405, simantu.com. Fontenay dress in violet, $640, nolita.it. Nicole Farhi velvet sash...
3.
A Treasure in Green
Magazine article by Parvinder S. Sethi; World and I, Vol. 13, December 1998
Subjects: Bogota, Colombia--Discovery and exploration, Emeralds--Discovery and exploration
...deep inside the earth. Calcite commonly encrusts various minerals, including emerald, pyrite, quartz, albite, apatite, and fluorite. The riches of the Colombian hills vis-a-vis their emerald content also have a less-known, uglier face--one of looting, theft...
4.
Special Focus on African Oil and Minerals
Magazine article by Guy Arnold; African Business, April 1995
Subjects: Africa--Natural resources, Mineral deposits--Economic aspects, Mines and mineral resources--Economic aspects, Mining--Economic aspects, Mining--Nutritional aspects, Natural resource policy
...single site near Namapa, and confirmed resources of 60bn cu m of natural gas. It has ilmenite, bauxite, manganese, graphite, fluorite, platinum, nickel, uranium, asbestos, diamonds and gold. US, French, German and South African companies are currently prospecting...
5.
Digital Infrared Photography
Magazine article by Jeff Morgan; PSA Journal, Vol. 74, August 2008
Subjects: Digital photography--Methods, Infrared photography--Methods
...Spot--Some of the good multi-coatings (like Super-Spectra Coating) used on high quality lenses and even lens materials like, fluorite and low-dispersion glass used today have an effect that lightens a circle in the center of the image, resulting in a "hot spot...
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newspaper articles on: Fluorite  - 13 results

       More newspaper Results: 1-10 11-13 >>  
 
1.
Miners Were Searching for Crystals and Lead
Newspaper article; The Journal (Newcastle, England), November 1, 2004
...mineral-rich fluids which cooled to form veins of lead ore, zinc, fluorite, quartz, baryte, witherite, calcite, limonite and pyrite...a folk craft in the mining community. The beauty of, say, fluorite which can be purple, plum, green, amber, or colourless or a...
2.
Some New Candidates, Warts and All, Campaign for State Office
Newspaper article; Daily Herald (Arlington Heights, IL), September 14, 2004
...have felt in 1965 covering the moment when fluorite became our state mineral. Quinn suspects the fluorite lobby may have played a role in that designation...a list that includes the aforementioned fluorite as our state mineral, the cardinal as our...
3.
20% off Jewellery at Indigo House
Newspaper article; The Daily Mail (London, England), October 25, 2006
...stunning rings and earring designs all set in silver, and gemstones include turquoise, amethyst and more unusual stones such as fluorite and sugalite. Indigo Houses collections combine contemporary design, bohemian style and natural materials to deliver a beautiful...
4.
Trapped Miner Is Rescued from Pit
Newspaper article; The Journal (Newcastle, England), August 30, 2004
...maker Byron Weege was rescued 250 yards inside the Rogerley Mine, near Frosterley, County Durham, where he was foraging for fluorite crystals with two colleagues. He was pinned down after a rockslide in the abandoned limestone quarry, breaking his left leg...
5.
Trapped Miner Rescued
Newspaper article; Evening Chronicle (Newcastle, England), August 30, 2004
...Weege became trapped 250 yards inside the Rogerley Mine, near Frosterley, 20 miles from Durham City. He had been foraging for fluorite crystals with two colleagues but was pinned down by a rockslide in the abandoned limestone quarry, breaking his left leg...
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encyclopedia articles on: Fluorite  - 11 results

       More encyclopedia Results: 1-10 11-11 >>  
 
1.
Fluorite
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
FLUORITE floo rit or fluorspar floo rspar, mineral appearing in various colors, e.g., green, yellow-brown, rose, and red...or translucent and under certain conditions exhibit fluorescence. The mineral also occurs in granular and massive forms. Fluorite is found in various parts of the world, especially in England, Germany, Mexico, and in Kentucky and Illinois in the United...
2.
Fluorspar
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
FLUORSPAR see fluorite . ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University Press. All rights reserved.
3.
Spar
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
SPAR For dogtooth spar, see calcite ; for fluorspar, see fluorite ; for heavy spar, see barite ; for satin spar, see calcite and gypsum . See also Iceland spar and feldspar...
4.
Fluorescence
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...understood. Probably the first to explain it was the British scientist Sir George G. Stokes, who named the phenomenon after fluorite, a strongly fluorescent mineral. Stokes is credited with the discovery (1852) that fluorescence can be induced in certain substances...
5.
Fluorine
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...potassium hydrogen fluoride. The mineral fluorite , or fluorspar (calcium fluoride), is...fluorine lies largely in its compounds. Fluorite is used as a flux in refining iron; cryolite...antisoil properties to textiles. The use of fluorite as a flux was described in 1529 by Georgius...
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