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Microcline, Quartz, Opal (Var: Opal-AN)


Microcline : K[AlSi3O8], Quartz : SiO2, Opal (Var: Opal-AN) : SiO2·nH2O

Photo Copyright © Photo & Collection of Martins da Pedra  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Jenipapo district, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
Floated crystal with two quartz groups and a Hyalite cape - Overall size 20x7x6cm - March of 2007

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