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johannite

A triclinic mineral, (Cu(UO2)2(SO4)2(OH)2.8H2O) ; radioactive; forms soft, bittertasting crystals that are polysynthetically twinned in two directions; in druses and reniform masses; at Joachimsthal, Czech Republic, and Gilpin County, CO; associated with gypsum.

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Penulis

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 poin
  • 100% positive feedback
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