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Pertlikite: K2(Fe++,Mg)2(Mg,Fe+++)4Fe+++2Al(SO4)12·18H2O
Comments: B&W image of dark olive green to black crystal of pertlikite from the type material. (AmMin, v46:661). Location: Madeni Zakh, Iran. Scale: Crystal size 1 mm. © Canadian Mineralogist
Pertsevite: Mg2(BO3)F
Comments: Backscattered electron (BSE) picture of pertsevite (P, darker grey) partially replacing clinohumite (C, lighter grey). The still lighter grey mineral with cleavage at the top contacting only pertsevite is calcite. (Eur. J. Mineral, 15:1008). Location: Contact-metasomatic kotoite marble from the region east of Verkhoyansk, Sakha-Yakutia, northeastern Siberia.. Scale: See Image. © Eur. J. Mineral
Petalite: LiAlSi4O10
Comments: Translucent, gemmy , equant petalite crystal with an etched surface texture resulting in irregular faces. Location: Paprok, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan. Scale: 5x3.5x3 cm. © John Betts - Fine Minerals
Petarasite: Na5Zr2Si6O18(Cl,OH)·2(H2O)
Comments: Mottled tan prismatic petarasite crystal in syenite rock. Location: De Mix Quarry, Mont Saint Hilaire, Rouville County, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Petedunnite: Ca(Zn,Mn++,Fe++,Mg)Si2O6
Comments: Dark green, fine-grained, massive petedunnite. Location: Franklin, New Jersey, USA. Scale: See Image. © Rruff Database
Petersenite-(Ce): (Na,Ca)4(Ce,La,Nd)2(CO3)5
Comments: Reddish brown specks of petersenite-(Ce) in matrix. Location: Mt. St. Hilaire, Quebec, Canada. Scale: Box Size 4 x 6 cm. © Sonke Stolze / Systematic Minerals
Petersite-(Y): (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6·3(H2O)
Comments: Fine, light green, acicular crystals of petersite-(Y) to less than 0.2mm occupying an area of about 1mm on dark green malachite. Location: Laurel Hill, Hudson Co., New Jersey, USA. Scale: Picture size .5 cm. © Tom Loomis / Dakota Matrix
Petewilliamsite: (Ni,Co,Cu)30(As2O7)15
Comments: SEM image of a portion of a petewilliamsite aggregate. Note the rounded nature of the crystal faces. (Min. Mag. 68:235). Location: Johanngeorgenstadt, Saxony, Germany. Scale: See Image. © Mineralogical Magazine
Petterdite: PbCr+++2(CO3)2(OH)4·H2O
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
Comments: Petterdite (Pe) forming a thin pink layer in grey-yellow anglesite (At) and cerussite, replacing galena (Gn), overgrown by red-yellow crocoite (Cr) and brown goethite (Gt). (CanMin, 38:1469). Location: Red Lead mine, on the Zeehan–Dundas mining field in northwestern Tasmania, Australia.. Scale: Field of view: 15 9 mm. © Canadian Mineralogist