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Agate

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
Varieties:
Abakusz-köAgate-JasperBlue Lace AgateBotswana AgateBrecciated Agate
Cloud AgateCrazy Lace AgateEnhydro AgateEye AgateFairburn Agate
Fire AgateFortification AgateFossil AgateHaema-ovoid-agatesHerbeckite
Iris AgateLaguna AgateLake Superior AgateMexican Lace AgateMocha Stone
Nipomo AgateOnyxPigeon Blood AgatePlume AgateRiband Agate
SardonyxVogelaugenachat

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).

Articles/Blogs about Agate

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

Internet Links for Agate

Search Engines:
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    Localities for Agate

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 17th Nov 2009 11:12:51