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Bertrandite, Quartz (Var: Smoky Quartz)


Bertrandite : Be4[(OH)2|Si2O7], Quartz (Var: Smoky Quartz) : SiO2

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Locality: Kara-Oba W deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Qaraghandy Oblysy (Karaganda Oblast'), Kazakhstan
Groups of flattened prismatic crystals, very sharp, which contrast with the deep smoky tones of the Quartz crystals as a matrix. The size, definition and color of the Bertrandite crystals make this specimen very extraordinary.
Kara-Oba, Betpakdala, Karaganda Oblast, Kazakhstan.
Found in 1995
Specimen size: 10.1 × 6 × 4.5 cm
Main crystal size: 1 × 0.2 cm


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