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Sillimanite: Al2SiO5 = Al[6]Al[4]OSiO4
Comments: Silky massive sillimanite. Location: Khasia Hills, Assum, India. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Silver: Ag
Comments: Numerous fine, silver wires to 4 mm in diameter attached to a matrix of massive white calcite and minor sulfides. Location: Himmelsfahrt mine, near Freiberg, Saxony, Germany. Scale: 4 x 4.5 x 6 cm. © Dan Weinrich
Silver: Ag Mckinstryite: (Ag,Cu)2S
Comments: Black metallic massive mckinstryite with wire silver. Location: Peregrina Mine, Guanajuato, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Silver: Ag Gold: Au
Comments: Very well crystallized Electrum (Silver rich gold) on quartz. The analysis gave 31.47% silver. Location: Verespatak (now Rosia Montana), Transylvania, Romania. Scale: 2.8 x 3.4 cm. © Fabre Minerals
Silver: Ag Stephanite: Ag5SbS4
Comments: Thick, ropy, native silver wires with blocky, well-crystallized stephanite on white and tan calcite matrix. Location: Freiberg, Erzgebirge, Saxony, Alemania, Germay. Scale: Picture size 3 cm. © Fabre Minerals
Silvialite: (Ca,Na)4Al6Si6O24(SO4,CO3)
Comments: BSE image of silvialite (Sil), plagioclase (An70)-calcite symplectite (P-C) corona, and plagioclase (An45, P). MinMag, v63:321. Location: Upper-mantle garnet-granulite xenoliths hosted by olivine nephelinite, from McBride Province, North Queensland, Australia. Scale: Scale Bar 100 µm. © Mineralogical Magazine
Simmonsite: Na2LiAlF6
Comments: Backscattered electron images of primary assemblage of cryolite-cryolithionite (cl) simmonsite (sm) and trace elpasolite (ep). (AmMin, v 84, p 770). Location: Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range, Mineral Co., Nevada, USA. Scale: See Image. © American Mineralogist
Simonellite: C19H24
Comments: Colorless to white Simonellite on fossil wood. Location: Fognano, Tuscany, Italy. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Simonkolleite: Zn5(OH)8Cl2·(H2O)
Comments: Very small colorless crystals with hexagonal shape of simonkolleite. Location: Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany. Scale: Picture size 0.8 mm. © Thomas Witzke / Abraxas-Verlag
Simpsonite: Al4(Ta,Nb)3O13(OH)
Comments: Translucent pale pink simpsonite crystal fragment. Location: Alto do Giz, Equidor, Rio Grande do Sol, Brazil. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species