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kupletskite

A triclinic mineral, (K,Na)3(Mn,Fe)7(Ti,Nb)2Si8O24(O,OH)7; astrophyllite group; forms series with astrophyllite and with cesium kupletskite.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
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