Orbicular Granite 51

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This slice of an orbicule of Orbicular Granite, polished on one side, 54gms, 6.5x7cms, 5mm thick, $20.00. orb51 This specimen is not a complete orbicule. This geologically interest ing rock comes from near Mount Magnet in Western Australia. The orbicules occur in a granodiorite matrix. They consist of andesine, plagioclase, hornblende, and biotite, arranged radially around a core of plagioclase and or hornblende, or less commonly mafic schist. You are buying a natural rock. What may be perceived as an imperfection is actually part of Mother Nature's creation. Show more