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Orthoclase, Quartz


Orthoclase : K[AlSi3O8], Quartz : SiO2

Photo Copyright © David Soler  - This image is copyrighted. Unauthorized reproduction prohibited.
A specimen showing a Baveno twin (left) with two attached small quartz crystals, a non-penetrating Carlsbad twin (front) and an untwinned crystal of orthoclase. Biggest crystal (Baveno twin) measures 1.5 cm long. David Soler specimen and photo, 2006.

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