O (n = 0.0 to 0.25)
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Ortenaukreis, Freiburg, Baden-WÃ¼rttemberg, Germany
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Dark bottle green Bernalite crystal aggregates on mamillary Goethite. Picture width 3 mm. Collection and Photograph Richard Bayerl. The Clara mine is the second world occurrence of this rare and unusual mineral.
- 15th February 2006
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