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Ribbeite: (Mn++,Mg)5(SiO4)2(OH)2
Comments: Massive pink to creamy ribbeite; slabbed polished section. Location: South-Fayulinskoe Deposit, Southern Ural, Russia. Scale: Not Given. © Diederik Visser
Rondorfite: Ca8Mg(SiO4)4Cl2
Comments: Brown to orange, shiny, massive rondorfite in matrix. Location: Bellerberg, Eifel, Germany. Scale: Not Given. © Diederik Visser
Sabatierite: Cu4TlSe3
Comments: Polished section with silvery metallic sabatierite in berzelianite. Location: Bukov, Moravia, Czech Republic. Scale: Specimen Size 2x4 cm. © Diederik Visser
Saddlebackite: Pb2Bi2Te2S3
Comments: BSE image of a saddlebackite grain. Location: Kockkar' deposit, Plast Town, southern Urals, Russia. Scale: Scale Bar 300µm. © Diederik Visser
Schwertmannite: Fe+++16O16(OH)12(SO4)2
Comments: Orange-brown, earthy schwertmannite. Location: Jachymov, Bohemia, Czech Republic. Scale: Not Given. © Diederik Visser
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
Smythite: (Fe,Ni)9S11 or (Fe,Ni)13S16
Comments: Dull metallic massive smythite with pyrite. Part of drillcore. Location: Helena, Boulder Co., Montana, USA. Scale: Specimen Size 2.5x3 cm. © Diederik Visser
Sobotkite: (K,Ca0.5)0.33(Mg,Al)3(Si3Al)O10(OH)2·1-5(H2O)
Comments: Massive, fine-grained rose-colored sobotkite (saponite). Location: Cuya, Atacama, Chile. Scale: See Specimen Tray. © Diederik Visser
Spodiophyllite: (Na,K)4(Mg,Fe++)3(Fe+++,Al)2(Si8O24)
Comments: Gray to black prismatic spodiophyllite crystals in matrix. Location: Mt. Kukisvumtchorr, Chibiny, Kola, Russia. Scale: Specimen Size 4x4 cm. © Diederik Visser
Squawcreekite: (Fe+++,Sb+++++,W++++++)O4·(H2O) Tripuhyite: Fe++Sb+++++O4
Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite. Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given. © Diederik Visser