Difference between revisions of "Celadonite"

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[[File:pc40801celadonite2.jpg|thumb|Celadonite]]
 
[[File:pc40801celadonite2.jpg|thumb|Celadonite]]
 
== Description ==
 
== Description ==
 
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[[File:celadonite C100x.jpg|thumb|Green earth (celadonite)]]
A soft, gray-green, iron silicate mineral.  Celadonite was first described in 1847 on Mr. Baldo near Verona, Italy.  It is a [[mica]] type mineral that has been found as a [[pigment]] in some Chinese and Indian paintings.  
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A soft, gray-green, iron silicate mineral.  Celadonite was first described in 1847 on Mr. Baldo near Verona, Italy.  The [[mica]] type mineral has been found as a [[pigment]] in some Chinese and Indian paintings. It is one of two green silicate minerals that are commonly called [[green earth]].  The other is [[Glauconite]].
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
 
green earth; celadonita (Esp.); Seladonit (Deut.), Celadonit (Deut.); céladonite (Fr.); seladonitis (Gr.); celadonite (It., Port.); terra verde (It.); groene aarde (Ned.)
 
green earth; celadonita (Esp.); Seladonit (Deut.), Celadonit (Deut.); céladonite (Fr.); seladonitis (Gr.); celadonite (It., Port.); terra verde (It.); groene aarde (Ned.)
  
[[[SliderGallery rightalign|Celadonite, collodion slide (Forbes MFA 376), 532nm.TIF~Raman|Celadonite.PNG~FTIR|Slide2 celadonite.PNG~XRF|f376sem.jpg~SEM|f376edsbw.jpg~EDS]]]
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==Physical and Chemical Properties==
  
{| class="wikitable"
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* Composition = K(Mg,Fe2+)(Fe3+,Al)[Si4O10](OH)2
|-
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* Mohs Hardness = 2
! scope="row"| Composition
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* Density = 2.5-2.7 g/ml
| K(Mg,Fe2+)(Fe3+,Al)[Si4O10](OH)2
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* Refractive Index = 1.62
|-
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* Crystal = monoclinic
! scope="row"| Mohs Hardness
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* Cleavage = perfect
| 2
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* Luster = waxy to dull
|-
 
! scope="row"| Density
 
| 2.5-2.7
 
|-
 
! scope="row"| Refractive Index
 
| 1.62
 
|}
 
  
 
== Additional Images ==
 
== Additional Images ==
  
 
<gallery>
 
<gallery>
File:celadonite C100x.jpg|Green earth (celadonite)
 
 
File:PIG376.jpg|XRD pattern of green earth
 
File:PIG376.jpg|XRD pattern of green earth
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File:Celadonite, collodion slide (Forbes MFA 376), 532nm.TIF|Raman (MFA)
 +
File:Celadonite.PNG|FTIR (MFA)
 +
File:Slide2 celadonite.PNG|XRF
 +
File:f376sem.jpg|SEM
 +
File:f376edsbw.jpg|EDS
 
</gallery>
 
</gallery>
  
 
+
==Resources and Citations==
== Sources Checked for Data in Record ==
 
  
 
* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966  Comment: density 2.5-2.7 and ref.index.1.62
 
* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966  Comment: density 2.5-2.7 and ref.index.1.62
 
 
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
 
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
 
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* Wikipedia: [https://en.wikipedia.org/wiki/Celadonite Celadonite] (Accessed Sept. 2, 2005 and March 2025) mohs=2, spec. grav=3)
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Celadonite (Accessed Sept. 2, 2005)mohs=2, spec. grav=3)
 
 
 
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
 
  
  
 
[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 11:08, 12 March 2025

Celadonite

Description

Green earth (celadonite)

A soft, gray-green, iron silicate mineral. Celadonite was first described in 1847 on Mr. Baldo near Verona, Italy. The Mica type mineral has been found as a Pigment in some Chinese and Indian paintings. It is one of two green silicate minerals that are commonly called Green earth. The other is Glauconite.

Synonyms and Related Terms

green earth; celadonita (Esp.); Seladonit (Deut.), Celadonit (Deut.); céladonite (Fr.); seladonitis (Gr.); celadonite (It., Port.); terra verde (It.); groene aarde (Ned.)

Physical and Chemical Properties

  • Composition = K(Mg,Fe2+)(Fe3+,Al)[Si4O10](OH)2
  • Mohs Hardness = 2
  • Density = 2.5-2.7 g/ml
  • Refractive Index = 1.62
  • Crystal = monoclinic
  • Cleavage = perfect
  • Luster = waxy to dull

Additional Images

Resources and Citations

  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966 Comment: density 2.5-2.7 and ref.index.1.62
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Wikipedia: Celadonite (Accessed Sept. 2, 2005 and March 2025) mohs=2, spec. grav=3)
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998