Difference between pages "Celestial blue" and "Celestite"

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[[File:celestiteemr1.jpg|thumb|Celestite (strontium sulfate)]]
 
== Description ==
 
== Description ==
  
A variety of [[Prussian blue]] often mixed with [[barium sulfate]] (Mayer 1969). It was also called Brunswick blue and daylight blue.
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A pale blue naturally occuring mineral composed of [[strontium sulfate]]. Celestite is found in sedimentary stone usually in conjunction with [[halite]] and [[dolomite|dolomitic limestone]]. Specimens have been found in England (Bristol), Italy (Sicily), Mexico (Matehuala) and the U.S.(Ohio, California). Celestite is mined as a source of strontium. It is also used in the manufature of ceramics, glass, and fireworks.
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
daylight blue; Brunswick blue; blu celestiale (It.); azul celeste (Port.)
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celestine; strontium sulfate
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[[[SliderGallery rightalign|celestiteRS.jpg~Raman|Celestineitaly1.jpg~Raman]]]
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==Physical and Chemical Properties==
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* Orthorhombic system with tabular
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* Perfect cleavage in one direction; good in two directions. 
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* Fracture = uneven. 
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* Luster = vitreous to pearly. 
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* Streak = white
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* Mohs Hardness =crystals. 
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* Sometimes fluorescent.   3.0 - 3.5
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* Density = 3.9-4.0 g/ml
  
 
==Resources and Citations==
 
==Resources and Citations==
  
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
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* Mineralogy Database: [http://www.webmineral.com/data/Celestine.shtml Celestine]
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* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "celestite." Accessed 8 Dec. 2004.
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* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
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* Wikipedia: http://en.wikipedia.org/wiki/Celestite (Accessed Sept 2, 2005)
  
* B. Berrie, S.Q. Lomax, 'Azo Pigments: Their History, Synthesis, Properties and Use in Artists' Materials', ''Studies in the History of Art'' , National Gallery of Art, Washington DC, No. 57, 1997
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
  
  
  
 
[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 09:14, 24 May 2022

Celestite (strontium sulfate)

Description

A pale blue naturally occuring mineral composed of Strontium sulfate. Celestite is found in sedimentary stone usually in conjunction with Halite and dolomitic limestone. Specimens have been found in England (Bristol), Italy (Sicily), Mexico (Matehuala) and the U.S.(Ohio, California). Celestite is mined as a source of strontium. It is also used in the manufature of ceramics, glass, and fireworks.

Synonyms and Related Terms

celestine; strontium sulfate

Raman

CelestiteRS.jpg

Raman

Celestineitaly1.jpg


Physical and Chemical Properties

  • Orthorhombic system with tabular
  • Perfect cleavage in one direction; good in two directions.
  • Fracture = uneven.
  • Luster = vitreous to pearly.
  • Streak = white
  • Mohs Hardness =crystals.
  • Sometimes fluorescent. 3.0 - 3.5
  • Density = 3.9-4.0 g/ml

Resources and Citations

  • C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983