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Poppiite
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| Poppiite Formula: (Ca1.92 Na.08) V2.04 Fe.26 Mg.2 Mn.15 Al.43 Cu.01 Ti.02 Si2.91 O14 H4 Name: Poppiite Unit cell: 19.2889 6.0444 8.8783 90.0 97.328 90.0 , V=1026.66 Space group: C12/M1 (12) |
Brigatti M F , Caprilli E , Marchesini M , American Mineralogist , 91 (2006) p.584-588, Poppiite, the V3+ end-member of the pumpellyite group: Description and crystal structure, Locality: Gambatesa mine, val Graveglia, Genova, Northern Italy
