Celadonite
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Description
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.
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 |
Additional Images
XRD pattern of green earth
Raman (MFA)
FTIR (MFA)
XRF
SEM
EDS
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: 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