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Strontioginorite: (Sr,Ca)2B14O23·8(H2O)
Comments: Silky white strontioginorite with anhydrite. Location: Kohnstein Quarry, Harz Mts, Thuringia, Germany. Scale: Sample Size 4 cm. © Thomas Witzke / Abraxas-Verlag
Strontiojoaquinite: (Na,Fe++)2Ba2Sr2Ti2[Si4O12]2(O,OH)2·(H2O)
Comments: Yellow, pointed crystals of Strontiojoaquinite on matrix. Location: Mina Numero Uno, San Benito County, California, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Strontiomelane: SrMn++++6Mn+++2O16
Comments: BSE image of strontiomelane. (CanMin, v37:673). Location: Praboma mine near Saint-Marcel, Aosta Valley, Italian Alps, Italy. Scale: Scale Bar 100 µm. © Canadian Mineralogist
Strontiopyrochlore: Sr2Nb2(O,OH)7
Comments: Creamy-white strontiopyrochlore pesudomorphous after twinned loparite? covered with brownish manganese oxide film. Location: Zircon point at the NE exocontact zone of the massif. Vavnbed Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Crystal Size 8x9x9 mm. © Pavel M. Kartashov
Strontiowhitlockite: Sr7(Mg,Ca)3(PO4)6[PO3(OH)] Bobierrite: Mg3(PO4)2·8(H2O)
Comments: Pale white to pink fine grained strontiowhitlockite with bobierrite. Location: Kovdor Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Strunzite: Mn++Fe+++2(PO4)2(OH)2·6(H2O)
Comments: Acicular, stellate sprays of strunzite crystals on matrix. Location: Palermo #1 mine, North Groton, Grafton County, New Hampshire, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Struverite: (Ti,Ta,Fe+++)O2
Comments: Struverite crystal in white feldspar. Location: Pisek, Jihocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Struvite: (NH4)MgPO4·6(H2O)
Comments: Yellow-brown tabular struvite crystal. Struvite is of organogenic origin and this type locality example is formed in manure pits. Location: Nicolaikirche, Hamburg, Germany. Scale: Specimen Size 1 x 1 x 1 cm. © Tom Loomis / Dakota Matrix
Comments: Opaque, white crystal struvite aggregates in earthy matrix. Location: Skipton Caves, Victoria, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Studenitsite: NaCa2[B9O14(OH)4]·2(H2O)
Comments: Pale pink crystalline studenitsite micro fragment. Location: Piskanja, Srbija, Yugoslavia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species