Difference between revisions of "Cassiterite"

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== Description ==
 
== Description ==
  
A hard, dense, brown to black mineral composed of [http://cameo.mfa.org/materials/fullrecord.asp?name=tin%20oxide tin oxide]. Cassiterite is the principal ore of [http://cameo.mfa.org/materials/fullrecord.asp?name=tin tin]. Starting in the 15th century, cassiterite was mined in Saxony and Bohemia. Currently it is mined in southeast Asia (Myanmar, Thailand, Mayasia, Indonesia), Bolivia (Llallagua), Nigeria, Russia, England (Cornwall), and the U.S. (Virginia, Wahington, California). Cassiterite has a dull metallic luster and can be transparent to opaque. It has occasionally been used as a gemstone.
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A hard, dense, brown to black mineral composed of [[tin oxide]]. Cassiterite is the principal ore of [[tin]]. Starting in the 15th century, cassiterite was mined in Saxony and Bohemia. Currently it is mined in southeast Asia (Myanmar, Thailand, Mayasia, Indonesia), Bolivia (Llallagua), Nigeria, Russia, England (Cornwall), and the U.S. (Virginia, Wahington, California). Cassiterite has a dull metallic luster and can be transparent to opaque. It has occasionally been used as a gemstone.
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
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[[[SliderGallery rightalign|cassiteriteRS.jpg~Raman]]]
 
[[[SliderGallery rightalign|cassiteriteRS.jpg~Raman]]]
  
== Other Properties ==
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==Physical and Chemical Properties==
  
Tetragonal crystal system with prisms, pyramids or fibers.  Good cleavage in two directions.   
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* Tetragonal crystal system with prisms, pyramids or fibers.   
 
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* Good cleavage in two directions.   
Fracture = uneven.  Luster = adamantine to dull.  Streak = white, gray or brown.
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* Fracture = uneven.   
 
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* Luster = adamantine to dull.   
Insoluble in acids.   
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* Streak = white, gray or brown.
 
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* Insoluble in acids.   
Pleochroism.  High birefrigence under crossed polars.  Straight extinction.
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* Pleochroism.  High birefrigence under crossed polars.  Straight extinction.
  
 
{| class="wikitable"
 
{| class="wikitable"
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|-
 
|-
 
! scope="row"| Density
 
! scope="row"| Density
| 6.8-7.1
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| 6.8-7.1 g/ml
 
|-
 
|-
 
! scope="row"| Refractive Index
 
! scope="row"| Refractive Index
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|}
 
|}
  
== Additional Information ==
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==Resources and Citations==
 
 
Mineralogy Database: [http://www.webmineral.com/data/Cassiterite.shtml Cassiterite]
 
  
== Authority ==
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* Mineralogy Database: [http://www.webmineral.com/data/Cassiterite.shtml Cassiterite]
  
 
* Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall, ''Pigment Compendium'', Elsevier Butterworth-Heinemann, Oxford, 2004
 
* Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall, ''Pigment Compendium'', Elsevier Butterworth-Heinemann, Oxford, 2004
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* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992
 
* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992
  
* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "cassiterite" Encyclopædia Britannica [Accessed December 11, 2001].
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* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "cassiterite" [Accessed December 11, 2001].
  
 
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
 
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
  
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Cassiterite (accessed Sept 2 2005)
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* Wikipedia: http://en.wikipedia.org/wiki/Cassiterite (accessed Sept 2 2005)
  
 
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
 
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

Latest revision as of 14:59, 20 May 2022

Cassiterite (tin doxide)

Description

A hard, dense, brown to black mineral composed of Tin oxide. Cassiterite is the principal ore of Tin. Starting in the 15th century, cassiterite was mined in Saxony and Bohemia. Currently it is mined in southeast Asia (Myanmar, Thailand, Mayasia, Indonesia), Bolivia (Llallagua), Nigeria, Russia, England (Cornwall), and the U.S. (Virginia, Wahington, California). Cassiterite has a dull metallic luster and can be transparent to opaque. It has occasionally been used as a gemstone.

Synonyms and Related Terms

tinstone; tin stone; wood tin; stream tin; Zinnstein (Deut.); Kassiterit (Deut.); cassitérite (Fr.); casiterita (Esp.); cassiterite (Port.); cassiteriet (Ned.)

Raman

CassiteriteRS.jpg


Physical and Chemical Properties

  • Tetragonal crystal system with prisms, pyramids or fibers.
  • Good cleavage in two directions.
  • Fracture = uneven.
  • Luster = adamantine to dull.
  • Streak = white, gray or brown.
  • Insoluble in acids.
  • Pleochroism. High birefrigence under crossed polars. Straight extinction.
Composition SnO2
Mohs Hardness 6.0 - 7.0
Density 6.8-7.1 g/ml
Refractive Index about 2.0

Resources and Citations

  • Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall, Pigment Compendium, Elsevier Butterworth-Heinemann, Oxford, 2004
  • Henry Hodges, Artifacts: An Introduction to Early Materials and Technology, Ronald P. Frye, Kingston, Canada, 1988
  • Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
  • C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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