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Scheuchzerite: Na(Mn,Mg)9[VSi9O28(OH)](OH)3 Saneroite: Na2(Mn++,Fe+++)10Si11V+++++O34(OH)4
Comments: BSE image of acicular scheuchzerite crystals (Sz) partially intergrown with platy saneroite (Snr) in a vug lined with minute quartz (Qtz) crystals. (AmMin v91:937). Location: Metamorphosed synsedimentary exhalative Mn deposit of Fianel, Val Ferrera, Central Alps, Switzerland. Scale: See Image. © American Mineralogist