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Probertite

Chemical Formula: NaCaB5O7(OH)4·3H2O Locality: Boron, Kern Co., California. Name Origin: Named for Frank H. Probert (1876-1940), University of California, who discovered the mineral. History Authors: EAKLE Discovery date :...

Prehnite

Chemical Formula: Ca2Al2Si3O10(OH)2 Locality: Haslach, Harzburg and Oberstein, Germany. Name Origin: Named after the Dutch Colonel, H. Von Prehn (1733-1785).Prehnite is a inosilicate of calcium and...

Powellite

Chemical Formula: Ca(MoO4) Locality: Peacock Mine, Cuprum, Seven Devils District, Adams Co., Idaho, USA Name Origin: Named after the American geologist, John Westly Powell (1834-1902).Powellite is...

Poudretteite

Chemical Formula: KNa2B3Si12O30 Locality: From Mont Saint-Hilaire, Quebec, Canada. Name Origin: Named for the Poudrette family, operators of the quarry where type material was discovered. Poudretteite is...

Polybasite

Chemical Formula: Name Origin: From the Greek, poly, "many" and basis, "a base" in allusion to the basic character of the compound. Polybasite is a...

Plattnerite

Chemical Formula: PbO2 Locality: Leadhills, Lanark, Scotland Name Origin: Named after the German metallurgist, K. F. Plattner (1800-1858).Plattnerite is an oxide mineral and is the beta...

Plancheite

Chemical Formula: Cu8(Si8O22)(OH)4·H2O Locality: Tantara and Kambowe, Zaire. Name Origin: Named after J. Planche who brought it from Africa. Plancheite is a hydrated copper silicate mineral with...

Plagionite

Chemical Formula: Pb5Sb8S17 Name Origin: From the Greek, plagios meaning "oblique." History Discovery date : 1833 Town of Origin : MINE GRAF JOST-CHRISTINA-ZECKE, WOLFSBERG, HARZ Country of Origin :...

Phosphophyllite

Chemical Formula: Zn2Fe(PO4)2·4H2O Name Origin: Named after its chemical composition containing phosphorus and the Greek fyllon - meaning "leaf." Phosphophyllite is a rare mineral composed of...

Phosgenite

Chemical Formula: Pb2CO3Cl2 Name Origin: Named from the composition phosgene (COCl2), as the mineral contains this compound.Phosgenite is a rare mineral consisting of lead chlorocarbonate,...

Phlogopite

Chemical Formula: KMg3(AlSi3O10)(OH,F)2 Name Origin: From the Greek flogopos - "resembling fire."Phlogopite is a yellow, greenish, or reddish-brown member of the mica family of phyllosilicates....

Phillipsite

Chemical Formula: (Ca,Na2,K2)3Al6Si10O32·12H2O Name Origin: Named after William Phillips (1775-1829), English mineralogist and founder of the Geological Society of London. Na modifier added by zeolite...

Phenakite

Chemical Formula: Be2SiO4  Locality: Takovaya, Ekaterinburg (Sverdlovsk), Ural Mts, Russia Name Origin: From the Greek phenakos - "deceiver", in allusion to its similarity to quartz when...

Petalite

Chemical Formula: LiAl(Si4O10) Name Origin: From the Greek petalon - "leaf" in allusion to the perfect basal cleavage. Petalite, also known as castorite, is a lithium...

Perovskite

Chemical Formula: CaTiO3 Locality: Achmatovsk near Kussinsk in the Zlatoust district, Ural mountans, Russia. Name Origin: Named after the Russian mineralogist, L. A. Perovski (1792-1856). Perovskite (pronunciation:...

Pectolite

Chemical Formula: NaCa2(HSi3O9) Locality: Prospect Park quarry, northern New Jersey. Name Origin: From the Greek pektos - "compacted" and lithos - "stone."Pectolite is a white to...

Parisite

Chemical Formula: Ca(Ce,La)2(CO3)3F2 Locality: Emerald mines, Muso, columbia. Name Origin: Named for J. J. Paris, mine proprietor at Muzo, north of Bogota, Columbia. Parisite is a rare...

Paravauxite

Chemical Formula: Fe2+Al2(PO4)2(OH)2·8H2O Locality: Llallagua, Potosi, Bolivia. Name Origin: Named for the chemical similarity to vauxite. Polymorph of metavauxite. History Discovery date : 1922 Town of Origin: LLALLAGUA, POTOSI Country...

Paramelaconite

Chemical Formula: Cu2Cu2O3 Locality: Copper Queen mine, Bisbee, Arizona, USA. Name Origin: Named from the Greek for near and melaconite, which in turn was named for...

Paradamite

Chemical Formula: Zn2(AsO4)(OH) Locality: Ojuela mine, Mapimi, Durango, Mexico Name Origin: Named as the dimorph of adamite. Paradamite is dimorphous with a famous arsenic mineral, namely adamite....

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