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Switzerite: (Mn++,Fe++)3(PO4)2·7(H2O)
Comments: Pale brown sub-metallic thin platy switzerite coatings. Location: Foote Mine, King's Mountain, Cleveland County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sylvite: KCl
Comments: Translucent sylvite crystal cluster, somewhat deliquescent. Location: F.O. Kailwerk, Sigmundshall, near Wunstorf, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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)
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
Szmikite: MnSO4·(H2O)
Comments: Tan translucent szmikite. Location: Calumet Mine, Galena Hill, Yukon Territory, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Szomolnokite: Fe++SO4·(H2O) Halotrichite: Fe++Al2(SO4)4·22(H2O)
Comments: Tan powdery szomolnokite crust on silky fibrous halotrichite with yellow metavoltine. Location: Markey Mine, Red Canyon, San Juan County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tacharanite: Ca12Al2Si18O33(OH)36 Phillipsite-Na: (Na,K,Ca)1-2(Si,Al)8O16·6(H2O)
Comments: Spherical tacharanite aggregates on phillipsite crystals. Location: Espalion, Aveyron, France. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tachyhydrite: CaMg2Cl6·12(H2O)
Comments: Translucent pink tinted granular tachyhydrite. Location: Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Taenite: gamma-(Fe,Ni)
Comments: Massive taenite, altering, intermixed with kamacite, in meteorite. Location: Agtalilik Meteorite, Melville Bay, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tainiolite: KLiMg2Si4O10F2
Comments: Micaceous tainiolite aggregate. Location: Magnet Cove, Hot Spring County, Arkansas, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species