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Plagioclase: (Na,Ca)(Si,Al)4O8 Albite: NaAlSi3O8
Comments: Crystal group of bladed albite (variety cleavelandite) crystals. Location: Taquaral, Minas Gerais, Brazil. Scale: 7.4 x 5 cm. © John Veevaert
Comments: Colorless, lustrous blocky albite crystals to 3 cm in size with a thick dusting of micaceous green micro chlorite. Location: Acushnet Quarry, Bristol Co., Massachussetts, USA. Scale: 17 x 15 x 7.5 cm matrix. © Dan Weinrich
Plagioclase: (Na,Ca)(Si,Al)4O8 Oligoclase: (Na,Ca)(Si,Al)4O8
Comments: Clear glassy crystalline oligoclase with milky quartz and muscovite. Location: Bakersville, Mitchell County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Plagionite: Pb5Sb8S17
Comments: Silvery metallic crystalline plagionite with brassy chalcopyrite. Location: Rocker Creek, Jefferson County, Montana, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Lead-gray crystals (to 2mm) of plagionite with a bluish tarnish on vuggy white calcite matrix. Location: Wolfsberg, Harz, Germany. Scale: 3.5 x 2.5 x 1.5cm. © Tom Loomis / Dakota Matrix
Plancheite: Cu8Si8O22(OH)4·(H2O)
Comments: Open vug lined with individual plancheite crystals to 3mm. Location: Mashamba West Mine, Shaba, Democratic Republic of the Congo. Scale: 2.5 x 1.7 cm. © John Veevaert
Planerite: Al6(PO4)2(PO3OH)2(OH)8·4(H2O)
Comments: Light green, oolitic coatings of planerite on matrix. Location: Mauldin Mountain Quarry, Mt. Ida, Montgomery County, Arkansas, USA. Scale: Picture size 0.5 cm. © John Veevaert
Platarsite: (Pt,Rh,Ru)AsS
Comments: Coexisting platarsite (2) and sperrylite (1) included in a Pt-Fe alloy matrix. (CanMin, v15:385). Location: Onverwacht mine, Transvaal, South Africa. Scale: See Image. © Canadian Mineralogist
Platinum: Pt
Comments: Crystallized platinum nugget. Location: Russia. Scale: 0.5 x 0.7 cm. © Fabre Minerals
Platinum: Pt Cherepanovite: RhAs Cooperite: (Pt,Pd,Ni)S
Comments: Creamy-grayish fractured grains of cherepanovite with gray granular cooperite and white massive grains of iridian ruthenian platinum. Polished section in reflected light. Location: Placer Deposit, Northern Pekul'nei River, Pekul'nei Range, Chukotka (Tchukotka) Okrug, Chukot Peninsula, Far-Eastern Region, Russia. Scale: Picture size 0.12 mm. © Thomas Witzke / Abraxas-Verlag
Comments: Stream-worn, platinum nugget with chromite? Inclusions. Location: Rio Tinto, San Juan River Basin, Papayan, Cauca, Columbia. Scale: Picture size 1.5 cm. © Paul M. Schumacher