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Pentlandite: (Fe,Ni)9S8 Plumbopalladinite: Pd3Pb2 Valleriite: 4(Fe,Cu)Sˇ3(Mg,Al)(OH)2 Cubanite: CuFe2S3
Comments: Polished Section image (PPL) of plumbopalladinite (Pl) with polarite Po), surrounded by a rim of isoferroplatinum (Iso) with cubanite (Cu), pentlandite (Pe), and valleriite (Va). Location: Majak Mine, Talnakh, Norilsk, Ural, Russia. Scale: Picture Size 0.7 mm. © Thomas Witzke
Periclase: MgO
Comments: Green nickel-rich periclase on matrix. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Periclase: MgO Srebrodolskite: Ca2Fe+++2O5
Comments: Black grains of srebrodolskite with white periclase. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag
Petterdite: PbCr+++2(CO3)2(OH)4ˇH2O
Comments: Pinkish-violet crystalline aggregate of petterdite on matrix. Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Picture size 2.5 mm. © Thomas Witzke / Abraxas-Verlag
Phoenicochroite: Pb2(CrO4)O
Comments: Deep red phoenicochroite with crocoite in matrix. Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Picture size 6.5 mm. © Thomas Witzke / Abraxas-Verlag
Phuralumite: Al2(UO2)3(PO4)2(OH)6ˇ10(H2O)
Comments: Yellow crystals of phuralumite scattered on white matrix. Location: Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Zaďre). Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Pitiglianoite: Na6K2Si6Al6O24(SO4)ˇ2(H2O)
Comments: Colorless, prismatic crystals of pitiglianoite. Location: Monte Cavallucio, Sacrofano, Campagnano, Lazio, Italy. Scale: Picture size 2.5 mm. © Thomas Witzke / Abraxas-Verlag
Pitticite: Hydrous ferric arsenate sulfate (Fe, AsO4, SO4, H2O)
Comments: Dark brown to orange-brown massive Pitticite. Location: Graul, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
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
Plumbojarosite: PbFe+++6(SO4)4(OH)12 Galena: PbS
Comments: Yellow, earthy plumbojarosite on massive, gray galena. Location: Quarry No 3, Königshain, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Plumbopalladinite: Pd3Pb2 Valleriite: 4(Fe,Cu)Sˇ3(Mg,Al)(OH)2 Cubanite: CuFe2S3 Pentlandite: (Fe,Ni)9S8
Polydymite: NiNi2S4
Comments: Octahedral crystals of polydymite on matrix. Location: Grüneau Mine (Grüne Au Mine; Grünau Mine), Schutzbach, Betzdorf, Siegen District (W), Rhineland-Palatinate, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Polyhalite: K2Ca2Mg(SO4)4ˇ2(H2O)
Comments: White crystals of polyhalite in matrix. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Ponomarevite: K4Cu++4OCl10
Comments: Orange ponomarevite. The sample stored in a closed vial. The photo was made through the vial. Location: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Poughite: Fe+++2(TeO3)2(SO4)ˇ3(H2O)
Comments: Yellow coatings of poughite on matrix. Location: Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Preisingerite: Bi3(AsO4)2O(OH)
Comments: Olive-greenish crystals of preisingerite on quartz. Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
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)4ˇ3(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
Protasite: Ba(UO2)3O3(OH)2ˇ3(H2O)
Comments: Orange crystals of protasite on matrix. Location: Shinkolobwe mine (Kasolo mine), Shaba (Katanga), Congo (Zaďre). Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag