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Symplesite: Fe++3(AsO4)2·8(H2O)
Comments: Fan-shaped spray of acicular symplesite on matrix. Location: Saubachthal, Saxony, Germany. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Synadelphite: (Mn,Mg,Ca,Pb)9(As+++O3)(As+++++O4)2(OH)9·2(H2O) (?)
Comments: Moss mine, Nordmark, Värmland, Sweden. Location: Black psuedo-octahedral crystals of synadelphite with cube modifications. Scale: See Image. © Rruff Database
Synchysite-(Ce): CaCe(CO3)2F
Comments: Prismatic crystals of synchysite-(Ce) on matrix. Location: Kaiserer quarry, Raurisertal, Salzburg, Austria. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Synchysite-(Ce): CaCe(CO3)2F Cordylite-(Ce): Ba(Ce,La)2(CO3)3F2
Comments: Yellow crystals of cordylite-(Ce) on light brownish synchysite-(Ce). Location: Narssârssuk (Narsarsuk), Igaliko, Greenland. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Synchysite-(Y): CaY(CO3)2F
Comments: Small thin tabular crystals of synchysite-(Y) in a vug. Location: Cuasso da Monte, Varese province, Lombardy, Italy. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Syngenite: K2Ca(SO4)2·(H2O)
Comments: Opaque platy crystal syngenite rosette on massive white halite. Location: Sigmundshall Mine, Bokelch, Hannover, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Szaibelyite: MgBO2(OH) Kainite: MgSO4·KCl·3(H2O)
Comments: pale violet granular kainite intermixed with white ascharite (szaibelyite). Location: Havesa, Empelde, Hannover, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Szaibelyite: MgBO2(OH) Borcarite: Ca4MgB4O6(OH)6(CO3)2
Comments: Pale aqua granular borcarite with white fibrous to granular szaibelyite. Location: Nalednoya, Republic of Sakha, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Szaibelyite: MgBO2(OH)
Comments: Bright white fibrous szaibelyite coating on serpentinite rock. Location: Stinson Beach, Marin County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Szenicsite: Cu3MoO4(OH)4
Comments: Deep green szenicsite crystals on siliceous green to brown jasperoid. Location: Jardinera #1 Mine, Atacama Province, Chile. Scale: 6.2 x 3.5 cm. © John Veevaert