's Image Gallery

Potassicleakeite: KNa2Mg2Fe+++2LiSi8O22(OH)2  
Watatsumiite: Na2KMn2LiV2Si8O24

Comments: Yellow green prismatic crystal of watatsumiite terminated by pyramidal faces associated with reddish brown potassicleakeite and clear quartz (JMPS, v 98, p 149).
Location: Tanohata mine, Iwate Prefecture, Japan. Scale: See Image.
© JMPS

Potassicpargasite: (K,Na)Ca2(Mg,Fe++)5Si8O22(OH,F)2

Comments: Brownish-black potassicpargasite crystal in calcite (repaired).
Location: Simonby, Pargas, Turku ja Pori, Finland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Potassicrichterite: (K,Na)(CaNa)2Mg5[Si8O22](OH,F)2

Comments: Lapidary sample of 'Dianite' consisting of blue nepherite with fiberous strontian (~3.5 % SrO) potassicrichterite. White nodule is quartz-microcline surrounded by dark green potassic-magnesio-arfvedsonite.
Location: Kedrovyi alkaline Massif, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia. Scale: Specimen Size 8.5x4x1 cm.
© Pavel M. Kartashov

Potassicsadanagaite: (K,Na)Ca2[Fe++3(Al,Fe+++)2][Si5Al3O22](OH)2

Comments: Dark greenish black crystalline potassicsadanagaite fragments.
Location: Ilmeny Mountains, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Potosiite: Pb6Sn2FeSb2S14  
Franckeite: (Pb,Sn)6Fe++Sn2Sb2S14

Comments: Visually indistinguishable metallic potosiite/franckeite crystals to 6 mm..
Location: San Jose mine, Oruro City, Oruro Department, Bolivia. Scale: Crystal size 6 mm.
© Rob Lavinsky

Pottsite: PbBiH(VO4)2·2(H2O)

Comments: Sub-mm, bright yellow to orange pottsite crystals form coating on one side of specimen.
Location: Linka Mine, Potts, Lander County, Nevada, USA. Scale: 3.5 x 4 cm.
© John Veevaert

Poubaite: PbBi2Se2(Te,S)2

Comments: Gray granular crystalline poubaite in white calcite.
Location: Oldrichov, near Tachov, western Bohemia, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Poudretteite: KNa2B3Si12O30

Comments: Pale pink gem fragment of poudretteite.
Location: Pyant-gyi mine, near Pein-pyit, Mogok, Sagaing Region, Mandalay Division, Burma. Scale: See Image.
© Rruff Database

Poughite: Fe+++2(TeO3)2(SO4)·3(H2O)

Comments: Yellow coatings of poughite on matrix.
Location: Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Povondraite: (Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4

Comments: Deep greenish black povondraite crystals.
Location: Malacacheta, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Powellite: CaMoO4

Comments: Sharp, thumbnail-sized crystal group of yellowish brown lustrous powellite crystals, the largest measuring 15 x 18 mm in size.
Location: Pandulane quarry, Nasik district, Maharashtra, India. Scale: 20 x 25 x 16 mm.
© Dan Weinrich

Poyarkovite: Hg3ClO

Comments: Dark greenish black thin poyarkovite film on white chert.
Location: Elena, Durango, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Prehnite: Ca2Al2Si3O10(OH)2

Comments: Very lustrous and brilliant prehnite.
Location: Deep Sahara, Morocco: Djbel Melh, Bou-Arfa. Scale: 9 x 6.5 cm.
© Fabre Minerals

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

Preiswerkite: NaMg2Al3Si2O10(OH)2

Comments: Pale green fine grained preiswerkite masses in dark amphibolite rock.
Location: Geisspfad, Binnental, Valias, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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