Bergenite

bergenite

uranocircite

torbernite

renardite

Images

Formula: Ca₂Ba₄(UO₂)₉O₆(PO₄)₆.16H₂O
Hydrated phosphate, uranyl mineral, phosphuranylite group, barium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 4.82 calculated
Streak: Yellow-white
Colour: Yellow
RADIOACTIVE
Environments

Hydrothermal environments

Localities

At the type locality, the Streuberg Quarry, Bergen, Vogtlandkreis, Saxony, Germany, bergenite was found as a secondary mineral on a dump, associated with much uranocircite, some torbernite, renardite, autunite, dewindtite, barium-bearing uranophane and unidentified secondary uranium minerals. (AM 45.909, HOM, Dana).
Bergenite from Streuberg - Image

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