Hydrated phosphate, phosphuranylite group, barium-bearing mineral
Specific gravity: 4.82 calculated
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).
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