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Chalcedony (Var: Agate), Opal, Quartz, Quartz (Var: Jasper)


Chalcedony (Var: Agate) : SiO2, Opal : SiO2·nH2O, Quartz : SiO2, Quartz (Var: Jasper) : SiO2

Photo Copyright © 2006 Peter Cristofono  - This image is copyrighted. Unauthorized reproduction prohibited.
Blue-gray banded agate enclosing colorless crystalline quartz and milky blue-white opal. The matrix is orange brown to reddish-brown jasper. View is about 15 mm across. P. Cristofono specimen and photo. Field-collected 2006.

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