Jahnsite-(MnMnFe), IMA 2018-096

Jahnsite-(MnMnFe) Mn2+Mn2+Fe2+ 2 Fe3+ 2 (PO4)4(OH)2·8H2O Malpensata granitic pegmatite dike, Piona pegmatite swarm, Colico (LC), Lombardy, Italy (46° 07?20?N, 9°19?33?E). Jahnsite group Monoclinic: P2/a; structure determined a=14.6983(6), b=7.1477(2), c=10.0209(4) Å, ?=107.128(4)° 9.221(89), 4.932(78), 4.651(78), 3.971(70), 3.504(63), 3.295(46), 2.840(82), 2.590(100) Type material is deposited in the mineralogical collections of the Laboratoire de Minéralogie, University of Liege, Bâtiment B18, Sart Tilman, B-4000 Lie?ge, Belgium, catalogue no. 21168