AM_Scheuchzerite Formula: Na.8 Mn8.57 Mg.63 V Si9 O32 H4 Name: Scheuchzerite Unit cell: 9.831 10.107 13.855 86.222 73.383 71.987 , V=1254.13 Space group: P-1 (2)

Brugger J , Krivovichev S , Meisser N , Ansermet S , Armbruster T , American Mineralogist , 91 (2006) p.937-943, Scheuchzerite, Na(Mn,Mg)9[VSi9O28(OH)](OH)3, a new single-chain silicate, Sample: Fianel, Val Ferrera, Central Alps, Switzerland