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Priceite: Ca2B5O7(OH)5·H2O
Comments: Botryoidal priceite aggregate. Location: Lone Randi Quarry, Curry County, Oregon, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Priceite: Ca2B5O7(OH)5·H2O Ginorite: Ca2B14O23·8(H2O)
Comments: Clear platy crystalline coatings of ginorite on rock with white priceite. Location: Corkscrew Canyon, Death Valley, Inyo County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Priderite: (K,Ba)(Ti,Fe+++)8O16
Comments: Clusters of sub-mm black, opaque crystals of priderite. Location: Eveslogchorr Mt., Khibiny, Kola, Russia. Scale: 2.5 x 3.4 cm. © John Veevaert
Pringleite: Ca9B26O34(OH)24Cl4·13(H2O)
Comments: SEM back-scatter photomicrograph of a polished thick section containing pringleite (Pr), hilgardite-lA (Hi) and halite (Hal). (CanMin, v31:795). Location: Potash Company of America mine at Penobsquis, near Sussex, New Brunswick, Canada. Scale: Picture Size 2 mm. © Canadian Mineralogist
Prismatine: ([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Comments: Prismatic crystals of prismatine in matrix. Location: Waldheim, Saxony, Germany. Scale: Picture size 7 mm. © Thomas Witzke / Abraxas-Verlag
Probertite: NaCaB5O7(OH)4·3(H2O)
Comments: Large colorless prismatic crystal of probertite. Location: Niedersachswerfen, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany. Scale: Crystal length 4.7 cm. © Thomas Witzke / Abraxas-Verlag
Proshchenkoite-(Y): (Y,REE,Ca,Na,Mn)15Fe++Ca(P,Si)Si6B3(O,F)48
Comments: Brown grains of proshchenkoite-(Y) on filter paper used for XRD analysis. Location: Tommot, Yakutia, Russia. Scale: Grain Size 0.3 mm. © Thomas Witzke
Prosopite: CaAL2(F,OH)8
Comments: Pale violet prosopite microcrystals. Location: Ivigtut, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Prosperite: CaZn2(AsO4)2·(H2O)
Comments: B&W image of prosperite prisms. Location: Tsumeb, South West Africa (Namibia). Scale: Crystal Length 5 mm. © Canadian Mineralogist
Protasite: Ba(UO2)3O3(OH)2·3(H2O)
Comments: Orange crystals of protasite on matrix. Location: Shinkolobwe mine (Kasolo mine), Shaba (Katanga), Congo (Zaïre). Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag