Mineral Specimen Images (S)

Sherwoodite: Ca9Al2V++++4V+++++24O80·56(H2O)

Comments: Dark blackish-violet sherwoodite, altering to translucent green, crystalline crust.
Location: San Juan County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Shibkovite: K(Ca,Mn,Na)2(K2-x,[ ]x)2ZnSi12O30 (x~0.8)  
Polylithionite: KLi2AlSi4O10(F,OH)2

Comments: Clear crystalline shibkovite aggregates with peach colored translucent polylithionite.
Location: Dara-Pioz, Tien-Shan, Tadzhikistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Shigaite: Mn++7Al4(SO4)2(OH)22·8(H2O)  
Pyrochroite: Mn(OH)2

Comments: Bronzy yellow crystals of shigaite set in a crystalline matrix of reddish black pychroite.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 2.8 x 2.3 cm.
© John Veevaert

Shigaite: Mn++7Al4(SO4)2(OH)22·8(H2O)

Comments: Cluster of sharp, transparent crystals of brown shigaite to 1.2 cm across.
Location: N'Chwaning mine. South Africa. Scale: Aggregate size 1.2 cm.
© John Veevaert

Shigaite: Mn++7Al4(SO4)2(OH)22·8(H2O)

Comments: Hexagonal aggregate of orange platy shigaite crystals on a jpale pink rhodocrosite matrix.
Location: N'Chwaning mine. South Africa. Scale: Crystal size 3 mm.
© Sandro Maggia/Minernet.it

Shirokshinite: K(NaMg2)Si4O10F2

Comments: Dark-brown columnar shirokshinite crystals with pinkish-brown fine-grained phillosilicate masses on greenish nathrolite.
Location: Kirovskii apatite mine (Kirovsky Mine; Kirov Mine), Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV is 12x10 mm.
© Pavel M. Kartashov

Shirozulite: KMn3(AlSi3)O10(OH,F)2

Comments: Back-scattered-electron image of shirozulite. Shr = shirozulite; Tp = tephroite; Ap = apatite; Rds = rhodochrosite; Bm = bementite. (AmMin, 89:233).
Location: Tauchi mine, Aichi Prefecture, Japan. Scale: See Image.
© American Mineralogist

Shkatulkalite: {(Na,Mn,Ca,[ ])4[Nb2(O,H2O)4Si4O14](OH,F)2}·2(H2O,[ ])  
Manganoneptunite: KNa2Li(Mn,Fe++)2Ti2Si8O24

Comments: Pearly white shkatulkalite with brown mangan-neptunite grains.
Location: Shkatulka pegmatite, Umbozero mine, Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Shomiokite-(Y): Na3Y(CO3)3·3(H2O)

Comments: Rose-colored single crystal of shomiokite-(Y).
Location: Mt. Alluaiv, Lovozero, Kola, Russia. Scale: Specimen Size 6x9 mm.
© Diederik Visser

Shortite: Na2Ca2(CO3)3

Comments: Colorless crystal of shortite on matrix.
Location: Green River Formation, Sweetwater Co., Wyoming, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Shortite: Na2Ca2(CO3)3

Comments: Triangular shortite crystal in kerogenaceous dolomitic marlstone from the saline zone in the Green River Formation.
Location: Green River, Sweetwater Co., Wyoming, USA. Scale: Crystal Size 2 mm.
© Tom Loomis / Dakota Matrix

Shuiskite: Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O)

Comments: Acicular shuiskite microcrystal sprays with epidote and prehnite.
Location: Quincy Mine, Hancock, Houghton County, Michigan, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sibirskite: CaHBO3

Comments: Translucent granular sibirskite.
Location: Novofrolovskoye, Sverdlovsk District, Northern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sicklerite: Li(Mn++,Fe+++)PO4  
Lithiophilite: LiMnPO4

Comments: Mottled tan-green-pink massive sicklerite with dark brown lithiophilite on quartz.
Location: Custer Mountain Lode, Custer County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Siderazot: Fe5N2

Comments: Bluish siderazot coatings on scoria lava rock.
Location: Eruption of 1941, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Siderite: Fe++CO3  
Arsenopyrite: FeAsS

Comments: White, metallic arsenopyrite and tan siderite crystals.
Location: Panasqueira (2000, 3rd level), in the region of Beira Baixa, Portugal. Scale: 11 x 7 cm.
© Fabre Minerals

Siderite: Fe++CO3

Comments: Blocky siderite crystals on quartz.
Location: Panasqueira (2nd level), in the region of Beira Baixa, Portugal. Scale: 7 x 8 cm.
© Fabre Minerals

Siderite: Fe++CO3

Comments: Bladed siderite crystal groups on crystallized quartz matrix.
Location: Peyrebrune, Tarn, France. Scale: 8.7 x 6.5 x 4.7 cm.
© Fabre Minerals

Siderite: Fe++CO3  
Garronite: Na2Ca5Al12Si20O64·27(H2O)

Comments: Translucent white micro crystals of garronite on brown siderite crystals.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sideronatrite: Na2Fe+++(SO4)2(OH)·3(H2O)

Comments: Golden yellow acicular sprays of sideronatrite crystals on matrix.
Location: Sulfur pit, Crescent Valley, Nevada, USA. Scale: 6 x 5 x 4 cm.
© John Veevaert