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Agate

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Formula:
SiO
 
2
Name:The name is derived from its occurrence at the Achates River in southwestern Sicily.
A variety of Chalcedony

A distinctly banded variety of Chalcedony.
Originally reported from Dirillo river (Achates river), Acate, Ragusa Province, Sicily, Italy.

Classification of Agate

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Chemical Properties of Agate

Formula:
SiO
 
2
Essential elements:O, Si
All elements listed in formula:O, Si

Other Names for Agate

Synonyms:
AchatesOriental Agate
Other Languages:
Dutch:Agaat
French:Agate grossière
Agate orientale
Agate périgone
Agate rubanée
Agate Versiclore
Agate zonaire
German:Achat
Italian:Agata
Agata-diasporo
Japanese:玉髄
Latin:Achates vix pellucida, nebulosa, colore griseo mixto
Agathe vixpellucida nebulosa colgriseo ore mixta
Simplified Chinese:玛瑙
Varieties:
Abakusz-köAgate-JasperBlue Lace AgateBotswana AgateBrecciated Agate
Cloud AgateCrazy Lace AgateEnhydro AgateEye AgateFairburn Agate
Fortification AgateFossil AgateHaema-ovoid-agatesHerbeckiteIris Agate
Laguna AgateLake Superior AgateMexican Lace AgateMocha StoneNipomo Agate
OnyxPigeon Blood AgatePlume AgateRiband AgateSardonyx
SchlangenhautachatSnakeskin AgateVogelaugenachatYoungite

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Agate

Reference List:

- +
Götze, J., Plötze, M., Fuchs, H., and Habermann, D. (1999) Defect structure and luminescence behavior of agate - results of electron paramagnetic resonance (EPR) and cathodoluminescence (CL) studies. Mineralogical Magazine: 63: 149-163.

Carlson, M.R. (2002) The Beauty of Banded Agates. Edina: Fortification Press.

Zenz, J. (2005): Achate. Bode Verlag, 656 pp. (in German).

Zenz, J. (2009): Achate II. Bode Verlag, 656 pp. (in German).

Moxon, T. (2009): Studies on Agate: Microscopy, Spectroscopy, Growth, High Temperature and Possible Origin. Terra Publications, Doncaster, UK, 96 pp.

extraLapis No. 39 (2010): Achate - geboren aus Vulkanen. Chr. Weise Verlag, Munich, Germany, 98 pp. (in German).

Mindat.org articles about Agate

Article entries:
Book Review - Agates IIJolyon Ralph
Wonderful World of Agates, WisconsinDavid Von Bargen

Internet Links for Agate

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  • Localities for Agate

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    Updated Mineral Entry: AfmiteFrom Vik Vanrusselt, 17th Feb 2012 14:51:58