The anhydrous amphibole ungarettiite from the Woods mine, New South Wales, australia

We report ungarettiite from the Woods mine, New South Wales, Australia; this is the second known occurrence. Electron-microprobe and ion-probe analyses show it to be very close to end-member composition, NaNa 2 Mn 2+ 2 Mn 3+ 3 Si 8 O 22 O 2 . We record the first direct determination of H 2 O (