Mineral Specimen Images (P)

Pitiglianoite: Na6K2Si6Al6O24(SO4)·2(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

Piypite: K2Cu2(SO4)2O

Comments: Green, acicular piypite crystals on matrix.
Location: Main Fracture Eruption (1975-1976) Tolbachik Volcano, Kamchatka, Russia. Scale: Picture Size 1 cm.
© Diederik Visser

Pizgrischite: (Cu,Fe)Cu14PbBi17S35

Comments: Pizgrischite crystals spray partially altered into malachite (green) and bismutite (yellow) in a fine-grained quartz matrix. (CanMin, v45:1229).
Location: Piz Grisch Mountain, Val Ferrera, Graubünden, Switzerland. Scale: Picture size 4 cm.
© Canadian Mineralogist

Pizgrischite: (Cu,Fe)Cu14PbBi17S35

Comments: SEM images of twinned pizgrischite crystals extracted from quartz matrix by treatment with dilute hydrofluoric acid. (CanMin, v45:1229).
Location: Piz Grisch Mountain, Val Ferrera, Graubünden, Switzerland. Scale: See Image.
© S. Ansermet/Canadian Mineralogist

Plagioclase: (Na,Ca)(Si,Al)4O8  
Albite: NaAlSi3O8

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  
Albite: NaAlSi3O8

Comments: Crystal group of bladed albite (variety cleavelandite) crystals.
Location: Taquaral, Minas Gerais, Brazil. Scale: 7.4 x 5 cm.
© John Veevaert

Plagioclase: (Na,Ca)(Si,Al)4O8  
Labradorite: (Ca,Na)(Si,Al)4O8

Comments: Dual view of a cleavage fragment of labradorite showing the multi-colored labradorescence (schiller effect) and the same area viewed without the color. The color is due to optical interference on Bøggild exsolution lamellae.
Location: Ihosy, Betroka district, Toliara Province, Madagascar. Scale: Picture size 3x3 cm.
© Dave Barthelmy

Plagioclase: (Na,Ca)(Si,Al)4O8  
Oligoclase: (Na,Ca)(Si,Al)4O8

Comments: Rectangular cleavage fragment of salmon-orange oligoclase (sunstone) feldspar.
Location: Norway. Scale: 47x30x7 mm.
© John Betts - Fine Minerals

Plagioclase: (Na,Ca)(Si,Al)4O8  
Anorthite: CaAl2Si2O8

Comments: Opaque white crystal of anorthite with dark brown solidified lava coating.
Location: Miyake-jima, Shizuoka, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Plagioclase: (Na,Ca)(Si,Al)4O8  
Andesine: (Na,Ca)(Si,Al)4O8

Comments: Translucent andesine crystal twin.
Location: Maeyama Ueda shi, Nagano, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Plagioclase: (Na,Ca)(Si,Al)4O8  
Bytownite: (Ca,Na)(Si,Al)4O8

Comments: Translucent crystalline bytownite.
Location: Crystal Bay, Hennepin County, Minnesota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Plagioclase, variety kenyite, crystals in volcanic rock.
Location: Kirinyaga (Mount Kenya), Central Province, Kenya. 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

Plagionite: Pb5Sb8S17

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  
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