Mineral Specimen Images (P)

Preobrazhenskite: Mg3B11O15(OH)9

Comments: Crudely formed white to tan translucent preobrazhenskite crystal on yellow crystalline massive material.
Location: Lake Inder, Atyrau, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Pretulite: ScPO4

Comments: SEM-BSE image of a euhedral crystal of pretulite (left), and proposed crystal forms (right).
Location: Apatite-rich oolitic Ordovician ironstone at Saint-Aubin-des-Châteaux, Armorican Massif, France. Scale: See Picture.
© Canadian Mineralogist

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

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

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

Protoanthophyllite: (Mg,Fe)7Si8O22(OH)2

Comments: Drill core showing white acicular crystalline aggregates of protoanthophyllite in matrix with a close up image on the right..
Location: Drill-core sample from the waste dump of the abandoned Takase chromite mine, Okayama Prefecture, Japan. Scale: Core size 3 cm.
© American Mineralogist

Protoferro-anthophyllite: (Fe++,Mn++)2(Fe++,Mg)5(Si4O11)2(OH)2

Comments: Sprays of brown-green prismatic protoferro-anthophyllite crystals.
Location: Nyppio mine, near Utsonomiya, Japan. Scale: See Image.
© Rruff Database

Protomangano-ferro-anthophyllite: (Mn++,Fe++)2(Fe++,Mg)5(Si4O11)2(OH)2

Comments: Light brown, silky protomangano-ferro-anthophyllite crystals on brown fayalite with grunerite.
Location: Suishouyama Pegmatite, Lizaka, Kawamatacho, Fukushima, Japan. Scale: Specimen Size 3x3 cm.
© Diederik Visser

Proudite: Cu1.9Ag0.1Pb15.6Bi20.4Sb0.1S32.4Se14.5

Comments: BSE image of proudite aggregates from Tennant Creek, Australia. Pr = proudite, light grey: J = junoite, G = gangue and holes. (CanMin v47:25).
Location: Juno mine, Tennant Creek, Northern Territory, Australia. Scale: See Image.
© Canadian Mineralogist

Proustite: Ag3AsS3

Comments: Crystal group of gemmy, red proustite. Smithsonian collection.
Location: Dolores I Mine, Chañarcillo, Atacáma Province, Chile. Scale: Specimen Size 6x8 cm.
© Dave Barthelmy

Pseudoboleite: Pb5Cu4Cl10(OH)8·2(H2O)

Comments: Blue crystal of pseudoboleite.
Location: Curuglu Mine, Santa Rosalía (El Boleó), Boleó District, Mun. de Mulegé, Baja California Sur, Mexico. Scale: Crystal size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Pseudobrookite: (Fe+++,Fe++)2(Ti,Fe++)O5

Comments: Black, prismatic crystals of pseudobrookite on matrix.
Location: Sierra County, New Mexico, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Pseudocotunnite: K2PbCl4 (?)

Comments: Bright white botryoidal pseudocotunnite coatings.
Location: Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species