Welcome to the RRUFF Project website containing an integrated database of Raman spectra, X-ray diffraction and chemistry data for minerals.

Search RRUFF Sample Data

Search Results

Sort By:
Displaying: 3001 - 3100 ‹‹ Prev   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ‹31› 32 33 34 35 36 37 38 39 40 41 42 43   Next ››
4216 Records Found

Pirquitasite
RRUFF ID: R061016
Ideal Chemistry: Ag1+2Zn2+Sn4+S2-4
Locality: Pirquitas, Jujuy Province, Argentina
Source: Michael Scott (small piece), Bob Jenkins (large piece) S101278
Owner: RRUFF
Description: Steel gray metallic massive, associated with rhodostannite, R120139. This sample was used in the Schumer et al (2013) study.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Groups: [ Stannite (11) ] [ Sphalerite (35) ]

Pirssonite
RRUFF ID: R070192
Ideal Chemistry: Na2Ca(CO3)2·2H2O
Locality: Natrum, Sahara, Egypt
Source: Renato and Adriana Pagano
Owner: RRUFF
Description: Colorless transparent hemimorphic tabular crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Pitiglianoite
RRUFF ID: R130097
Ideal Chemistry: K2Na6(Si6Al6)O24(S6+O4)·2H2O
Locality: Mt Cavalluccio, Campagnano di Roma, Sacrofano Caldera, Rome Province, Latium, Italy
Source: Donald Doell
Owner: RRUFF
Description: Colorless hexagonal prisms. NOTE THIS IS NOT REALLY PITIGLIANOITE, NEEDS CHEMISTRY
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Groups: [ cancrinite (11) ] [ cancrinite-sodalite (37) ]

Piypite
RRUFF ID: R130048
Ideal Chemistry: K4Cu2+4O2(S6+O4)4·(Na,Cu1+)Cl
Locality: Second scoria cone, Northern Breakthrough (North Breach), Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Source: Don Doell
Owner: RRUFF
Description: Sprays of bright green acicular crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Plancheite
RRUFF ID: R070233
Ideal Chemistry: Cu2+8(Si4O11)2(OH)4·H2O
Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia
Source: Michael Scott S105426
Owner: RRUFF
Description: Light blue radial fibrous, chatoyant crystals with drusy malachite
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ Plancheite (4) ]
Quick search: [ All Plancheite samples (2) ]

Plancheite
RRUFF ID: R190037
Ideal Chemistry: Cu2+8(Si4O11)2(OH)4·H2O
Locality: Kambove, Katanga, Democratic Republic of the Congo
Source: Rukin Jelks UAMM17415
Owner: UAMM
Description: Sprays of blue fibrous or acicular crystals on matrix
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Plancheite (4) ]
Quick search: [ All Plancheite samples (2) ]

Planerite
RRUFF ID: R080123
Ideal Chemistry: Al6(PO4)2(PO3OH)2(OH)8·4H2O
Locality: Bruguers, Gavá, Barcelona, Catalonia, Spain
Source: Joan Abella i Creus
Owner: RRUFF
Description: Light green, microcrystalline fragments
Status: The identification of this mineral has been confirmed only by X-ray diffraction
Mineral Group: [ turquoise (9) ]

Platinum
RRUFF ID: R060750
Ideal Chemistry: Pt
Locality: Bear Creek, near Nyak, Alaska, USA
Source: Michael Scott S101233
Owner: RRUFF
Description: Silver metallic water-worn nuggets
Status: The identification of this mineral has been confirmed by X-ray diffraction.
Mineral Group: [ Copper (13) ]
Quick search: [ All Platinum samples (2) ]

Platinum
RRUFF ID: R110126
Ideal Chemistry: Pt
Locality: Tambiano River, Riampinang, Kalimantan Selatan Province, Borneo Island, Indonesia
Source: Mark N Feinglos
Owner: RRUFF
Description: Small silver water-worn nuggets associated with laurite R110120
Status: The identification of this mineral has been confirmed by X-ray diffraction.
Mineral Group: [ Copper (13) ]
Quick search: [ All Platinum samples (2) ]

Plattnerite
RRUFF ID: R070605
Ideal Chemistry: Pb4+O2
Locality: Ojuela mine, Mapimi, Durango, Mexico
Source: James Shigley
Owner: RRUFF
Description: Black tarnished metallic prismatic crystals.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Rutile (23) ]
Quick search: [ All Plattnerite samples (2) ]

Plattnerite
RRUFF ID: R080019
Ideal Chemistry: Pb4+O2
Locality: Snake Pit, lower Mex-Tex mine, Hansonburg District, Socorro County, New Mexico, USA
Source: William W. Pinch
Owner: RRUFF
Description: Black twinned crystals associated with red scrutinyite, R080018, on the surface of a quartz crystal
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Rutile (23) ]
Quick search: [ All Plattnerite samples (2) ]

Plombièrite
RRUFF ID: R070162
Ideal Chemistry: Ca5Si6O16(OH)2·7H2O
Locality: Crestmore, Riverside County, California, USA
Source: James Shigley
Owner: RRUFF
Description: Matted white fibrous aggregate with calcite
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ Tobermorite (2) ]

Plumbogummite
RRUFF ID: R050458
Ideal Chemistry: Pb2+Al3(PO4)(PO3OH)(OH)6
Locality: Cornwall, England
Source: University of Arizona Mineral Museum 3040
Owner: RRUFF
Description: Grayish blue botryoidal crust associated with yellow-green pyromorphite
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Groups: [ alunite (46) ] [ crandallite (14) ]
Quick search: [ All Plumbogummite samples (3) ]

Plumbogummite
RRUFF ID: R060684
Ideal Chemistry: Pb2+Al3(PO4)(PO3OH)(OH)6
Locality: unknown
Source: Bob Jenkins
Owner: RRUFF
Description: Pale blue crust associated with dark blue linarite and teal colored caledonite
Status: The identification of this mineral is not yet confirmed.
Mineral Groups: [ alunite (46) ] [ crandallite (14) ]
Quick search: [ All Plumbogummite samples (3) ]

Plumbogummite
RRUFF ID: R070700
Ideal Chemistry: Pb2+Al3(PO4)(PO3OH)(OH)6
Locality: Yangshuo, Guangxi Autonomous Region, China
Source: Ken Roberts
Owner: RRUFF
Description: Grayish blue botryoidal crust associated with pale yellow pyromorphite
Status: The identification of this mineral is not yet confirmed.
Mineral Groups: [ alunite (46) ] [ crandallite (14) ]
Quick search: [ All Plumbogummite samples (3) ]

Plumbonacrite
RRUFF ID: R160063
Ideal Chemistry: Pb2+5(CO3)3O(OH)2
Locality: Mammoth mine, Tiger, Pinal County, Arizona, USA
Source: University of Arizona Mineral Museum 4031
Owner: University of Arizona Mineral Museum
Description: White massive crystals, associated with deep blue boleite, blue diaboleite, and pale bluish leadhillite
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Quick search: [ All Plumbonacrite samples (2) ]

Plumbonacrite
RRUFF ID: R130567
Ideal Chemistry: Pb2+5(CO3)3O(OH)2
Locality: Merehead Quarry, Cranmore, Somerset, England, UK
Source: Rick Turner
Owner: RRUFF
Description: Colorless hexagonal bipyramidal crystal on cerussite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Plumbonacrite samples (2) ]

Plumbophyllite
RRUFF ID: R130081
Ideal Chemistry: Pb2+2Si4O10·H2O
Locality: Blue Bell claims, about 11 km west of Baker, San Bernardino County, California, USA
Source: Anthony R. Kampf and George R. Rossman
Owner: Anthony R. Kampf
Description: Colorless to pale blue and transparent. Data from Kampf et al (2009)
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis

Plumbotsumite
RRUFF ID: R110157
Ideal Chemistry: Pb2+5Si4O8(OH)10
Locality: Blue Bell claims, Baker, San Bernardino County, California, USA
Source: Donald M Doell
Owner: RRUFF
Description: Glassy pale blue massive, with a well-defined cleavage.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Poldervaartite
RRUFF ID: R080080
Ideal Chemistry: Ca2(SiO3OH)(OH)
Locality: Wessels mine, Hotazel, Kalahari manganese field, Cape Province, South Africa
Source: William W. Pinch
Owner: RRUFF
Description: Colorless prismatic crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Polkanovite
RRUFF ID: R070076
Ideal Chemistry: Rh12As7
Locality: Miass River, Urals, Russia
Source: Michael Scott S105051
Owner: RRUFF
Description: Dark bluish-gray semimetallic inclusion in Os,Ir,Ru matrix. The sample is a polished fragment embedded in epoxy
Status: The identification of this mineral has been confirmed only by chemical analysis

Pollucite
RRUFF ID: R050344
Ideal Chemistry: Cs(Si2Al)O6·nH2O
Locality: Konar Province, Afghanistan
Source: George Rossman 2314
Owner: RRUFF
Description: Colorless fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Analcime (11) ]
Quick search: [ All Pollucite samples (2) ]

Pollucite
RRUFF ID: R050345
Ideal Chemistry: Cs(Si2Al)O6·nH2O
Locality: Bernic Lake, Manitoba, Canada
Source: California Institute of Technology W-20317
Owner: RRUFF
Description: Colorless to white fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Analcime (11) ]
Quick search: [ All Pollucite samples (2) ]

Polybasite
RRUFF ID: R061052
Ideal Chemistry: Cu1+(Ag1+,Cu1+)6Ag1+9Sb3+2S2-11
Locality: Elsa, Yukon Territory, Canada
Source: Royal Ontario Museum M52499
Owner: RRUFF
Description: Metallic, iron-black with reddish hints; pseudohexagonal tabular crystals associated with hexagonal prisms of stephanite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Polybasite (6) ]

Polydymite
RRUFF ID: R050609
Ideal Chemistry: Ni2+Ni3+2S2-4
Locality: Dry Nickel mine, Bindura, South Rhodesia, Rhodesia
Source: University of Arizona Mineral Museum
Owner: RRUFF
Description: Reddish-bronze tarnished metallic fragment associated with green clinochlore and white actinolite
Status: The identification of this mineral has been confirmed by X-ray diffraction.
Mineral Group: [ Spinel (66) ]
Quick search: [ All Polydymite samples (2) ]

Polydymite
RRUFF ID: R070377
Ideal Chemistry: Ni2+Ni3+2S2-4
Locality: Shamva mine, Mashonaland Central, Zimbabwe
Source: James Shigley
Owner: RRUFF
Description: Grey metallic massive associated with clinochlore
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ Spinel (66) ]
Quick search: [ All Polydymite samples (2) ]

Polyhalite
RRUFF ID: R070209
Ideal Chemistry: K2Ca2Mg(S6+O4)4·2H2O
Locality: West Texas, Texas, USA
Source: Michael Scott S105883
Owner: RRUFF
Description: Colorless to brick red massive
Status: The identification of this mineral has been confirmed by X-ray diffraction.

Polylithionite
RRUFF ID: R050132
Ideal Chemistry: KLi2AlSi4O10F2
Locality: Brown Derby mine, Ohio City, Gunnison County, Colorado, USA
Source: Dave Bunk Minerals
Owner: RRUFF
Description: Purple scaly aggregate, polytype 2M1
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ mica (50) ]
Quick search: [ All Polylithionite samples (4) ]

Polylithionite
RRUFF ID: R060172
Ideal Chemistry: KLi2AlSi4O10F2
Locality: Mont Saint-Hilaire, Quebec, Canada
Source: Guy Ouellet
Owner: RRUFF
Description: Pseudohexagonal micaceous crystals with small white natrolite, red rhodochrosite and white albite
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ mica (50) ]
Quick search: [ All Polylithionite samples (4) ]

Polylithionite
RRUFF ID: R060215
Ideal Chemistry: KLi2AlSi4O10F2
Locality: Mont Saint-Hilaire, Rouville County, Quebec, Canada
Source: Royal Ontario Museum M49441
Owner: RRUFF
Description: Tan to colorless micaceous fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ mica (50) ]
Quick search: [ All Polylithionite samples (4) ]

Polylithionite
RRUFF ID: R060225
Ideal Chemistry: KLi2AlSi4O10F2
Locality: Mont Saint-Hilaire, Rouville County, Quebec, Canada
Source: Royal Ontario Museum M52556
Owner: RRUFF
Description: Tan colored hexagonal shaped mica
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ mica (50) ]
Quick search: [ All Polylithionite samples (4) ]

Polystyrene
RRUFF ID: R150076
Ideal Chemistry: (C8H8)n
Locality: Synthetic
Source: Thermo Electron Corporation
Owner: RRUFF
Description: Polystyrene calibration standard
Status: unconfirmed

Portlandite
RRUFF ID: R070210
Ideal Chemistry: Ca(OH)2
Locality: N'Chwaning II mine, Kalahari Manganese Field, northern Cape Province, South Africa
Source: Michael Scott S105352
Owner: RRUFF
Description: White flexible platy crystals associated with calcite
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Brucite (5) ]

Posnjakite
RRUFF ID: R110172
Ideal Chemistry: Cu2+4S6+O4(OH)6·H2O
Locality: Yellow Rose of Texas mine, Animas District, San Juan County, Colorado, USA
Source: George Stevens
Owner: RRUFF
Description: Blocky light blue crystals associated with dark blue linarite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Potassic-arfvedsonite
RRUFF ID: R050516
Ideal Chemistry: KNa2Fe2+4Fe3+Si8O22(OH)2
Locality: Red Wine complex, Labrador, Newfoundland, Canada
Source: Frank Hawthorne
Owner: RRUFF
Description: Black fragments, structure is published in Can Min 14 (1976) 346-356
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ amphibole (107) ]

Potassic-fluoro-pargasite
RRUFF ID: R110065
Ideal Chemistry: KCa2(Mg4Al)Si6Al2O22F2
Locality: Tranomaro, Fort Dauphine area, Madagascar
Source: Renato & Adriana Pagano
Owner: RRUFF
Description: Black blocky euhedral single-crystal, from the original find
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ amphibole (107) ]

Potassic-fluoro-richterite
RRUFF ID: R060034
Ideal Chemistry: K(NaCa)Mg5Si8O22F2
Locality: Walgidee, Western Australia, Australia
Source: University of Arizona Mineral Museum 8624
Owner: RRUFF
Description: Transparent brown water worn crystal fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ amphibole (107) ]

Potassic-magnesio-fluoro-arfvedsonite
RRUFF ID: R060915
Ideal Chemistry: KNa2(Mg4Fe3+)Si8O22F2
Locality: Kipawa, Quebec, Canada
Source: Royal Ontario Museum M52453
Owner: RRUFF
Description: Dark blue-green amphibole with pronounced cleavage, associated with white albite and red eudialyte
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ amphibole (107) ]

Potassium Dihydrogen Phosphate
RRUFF ID: R120165
Ideal Chemistry: KH2PO4
Locality: Synthetic, by Alvin Van Valkenburg at the National Bureau of Standards
Source: Eric Van Valkenburg
Owner: RRUFF
Description: Colorless transparent prismatic single crystal, also known as KDP (is this archerite???)
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.

Poudretteite
RRUFF ID: R080009
Ideal Chemistry: KNa2(B3Si12)O30
Locality: Pyant-gyi mine, near Pein-pyit, Mogok, Sagaing Region, Mandalay Division, Burma
Source: William W. Pinch
Owner: RRUFF
Description: Pale pink gem fragment
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Milarite (18) ]

Poughite
RRUFF ID: R080026
Ideal Chemistry: Fe3+2(Te4+O3)2S6+O4·3H2O
Locality: Mina Candelaria, Moctezuma, Sonora, Mexico
Source: William W. Pinch
Owner: RRUFF
Description: Bright-yellow to honey-yellow drusy crusts associated with green emmonsite
Status: The identification of this mineral has been confirmed only by X-ray diffraction

Powellite
RRUFF ID: R050355
Ideal Chemistry: CaMo6+O4
Locality: Nasik, India
Source: George Rossman 2204
Owner: RRUFF
Description: Light brown fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Scheelite (17) ]
Quick search: [ All Powellite samples (2) ]

Powellite
RRUFF ID: R100180
Ideal Chemistry: CaMo6+O4
Locality: Carlota mine, Pinto Creek, Gila, Arizona, USA
Source: Joe Ruiz
Owner: RRUFF
Description: Pale green thick tabular crystals, associated with blue azurite, green elongated szenicsite (R100179) and colorless granular prosopite (R100181).
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Scheelite (17) ]
Quick search: [ All Powellite samples (2) ]

Prehnite
RRUFF ID: R040047
Ideal Chemistry: Ca2Al(Si3Al)O10(OH)2
Locality: Chloride, Mohave County, Arizona, USA
Source: University of Arizona Mineral Museum 13048
Owner: RRUFF
Description: Green coarsely crystalline massive
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Prehnite (4) ]
Quick search: [ All Prehnite samples (4) ]

Prehnite
RRUFF ID: R050055
Ideal Chemistry: Ca2Al(Si3Al)O10(OH)2
Locality: Diako, Sandare District, Mali
Source: Rock Currier
Owner: RRUFF
Description: Light green reniform aggregate
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Prehnite (4) ]
Quick search: [ All Prehnite samples (4) ]

Prehnite
RRUFF ID: R050410
Ideal Chemistry: Ca2Al(Si3Al)O10(OH)2
Locality: Topel, Namibia
Source: John Lucking
Owner: RRUFF
Description: Aggregate of pale green prismatic crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Prehnite (4) ]
Quick search: [ All Prehnite samples (4) ]

Prehnite
RRUFF ID: R130046
Ideal Chemistry: Ca2Al(Si3Al)O10(OH)2
Locality: Eagle Head (Deep Cove), Cape Breton County, Nova Scotia, Canada
Source: Don Doell
Owner: RRUFF
Description: Colorless bladed crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Prehnite (4) ]
Quick search: [ All Prehnite samples (4) ]

Preisingerite
RRUFF ID: R060803
Ideal Chemistry: Bi3+3O(As5+O4)2(OH)
Locality: Josef mine, Moldava, Czech. Republic
Source: Michael Scott S100110
Owner: RRUFF
Description: Group of tan colored spheres
Status: The identification of this mineral is not yet confirmed.

Preobrazhenskite
RRUFF ID: R090040
Ideal Chemistry: Mg3B11O15(OH)9
Locality: Inder B deposit and salt dome, Atyrau Oblast, Kazakhstan
Source: Herb Obodda
Owner: RRUFF
Description: Colorless crystal fragment
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Priceite
RRUFF ID: R050420
Ideal Chemistry: Ca2B5O7(OH)5·H2O
Locality: 20-Mule-Team Canyon, Death Valley, California, USA
Source: Marcus Origlieri
Owner: RRUFF
Description: White cryptocrystalline massive
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Priceite samples (2) ]

Priceite
RRUFF ID: R110008
Ideal Chemistry: Ca2B5O7(OH)5·H2O
Locality: Synthetic
Source: Jin-Xiao Mi
Owner: RRUFF
Description: Spherical aggregates of colorless thin bladed crystals with distinct cleavage along the blades
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Priceite samples (2) ]
Priderite
RRUFF ID: X060012
Ideal Chemistry: K(Ti4+7Fe3+)O16
Locality: Walgidee Hills, Western Australia, Australia
Source: University of Arizona Mineral Museum 8625
Owner: University of Arizona Mineral Museum
Description: Small single crystals
Status: The identification of this mineral has been determined only by Raman spectroscopy
Mineral Group: [ Coronadite (13) ]
Quick search: [ All Priderite samples (3) ]

Priderite
RRUFF ID: R060437
Ideal Chemistry: K(Ti4+7Fe3+)O16
Locality: Walgridee Hills Intrusion, Western Australia, Australia
Source: Michael Scott S100111
Owner: RRUFF
Description: Dark brown cleavage fragment
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Coronadite (13) ]
Quick search: [ All Priderite samples (3) ]

Priderite
RRUFF ID: R130169
Ideal Chemistry: K(Ti4+7Fe3+)O16
Locality: Vounnemiok River, Kola Peninsula, Russia
Source: Rock Currier
Owner: RRUFF
Description: Black prismatic crystals and massive in quartz
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Coronadite (13) ]
Quick search: [ All Priderite samples (3) ]

Prismatine
RRUFF ID: R210004
Ideal Chemistry: (Mg,Al,Fe2+,Fe3+)6Al4(Si,Al)4(B,Si,Al)(O,OH,F)22
Locality: Goods Station Waldheim, Saxony, Germany
Source: Dr Rainer Thomas
Owner: Dr Rainer Thomas
Description: Dark green prismatic crystals in a polished thick-section (5 x 5 x 0.5 mm in dimension). Dr Thomas collected the sample in 1969
Status: unconfirmed
Mineral Group: [ Kornerupine (3) ]

Probertite
RRUFF ID: R050284
Ideal Chemistry: NaCaB5O7(OH)4·3H2O
Locality: Borax Open Pit, Boron, Kern County, California, USA
Source: Marcus Origlieri
Owner: RRUFF
Description: Spray of colorless acicular single crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis

Prosopite
RRUFF ID: R050668
Ideal Chemistry: CaAl2F4(OH)4
Locality: Grand Reef mine, Klondyke, Aravaipa District, Graham County, Arizona, USA
Source: University of Arizona Mineral Museum 14101
Owner: RRUFF
Description: Light-blue massive coating on quartz
Status: The identification of this mineral has been confirmed by X-ray diffraction.
Quick search: [ All Prosopite samples (2) ]

Prosopite
RRUFF ID: R100181
Ideal Chemistry: CaAl2F4(OH)4
Locality: Carlota mine, Pinto Creek, Gila, Arizona, USA
Source: Joe Ruiz
Owner: RRUFF
Description: Colorless granular crystals, associated with blue azurite, green elongated szenicsite (R100179) and pale green thick tabular powellite (R100180)
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Prosopite samples (2) ]

Proto-ferro-anthophyllite
RRUFF ID: R060053
Ideal Chemistry: Fe2+7Si8O22(OH)2
Locality: Nyppio mine, near Utsonomiya, Japan
Source: Marcus Origlieri
Owner: RRUFF
Description: Sprays of green prismatic crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ amphibole (107) ]

Proto-ferro-suenoite
RRUFF ID: R061000
Ideal Chemistry: ◻Mn2+2Fe2+5Si8O22(OH)2
Locality: Yokoneyama, Tochigi, Japan
Source: Michael Scott S101306
Owner: RRUFF
Description: Gray prismatic to fibrous associated with pyroxmangite R060999
Status: The identification of this mineral has been made only by X-ray diffraction.
Mineral Group: [ amphibole (107) ]

Protochabournéite
RRUFF ID: R140583
Ideal Chemistry: Tl1+4-xPb2+2+2xSb3+20-x-yAs3+yS2-34 (with 0.02 ≤ x ≤ 0.34, 5.71 ≤ y ≤ 6.69)
Locality: Monte Arsiccio mine, Sant'Anna Di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy
Source: Stefan Schorn
Owner: RRUFF
Description: Black metallic crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Chabourneite (3) ]

Proustite
RRUFF ID: R060356
Ideal Chemistry: Ag1+3As3+S2-3
Locality: Chanarcillo, Atacama Province, Chile
Source: Herb Obodda 040
Owner: RRUFF
Description: Red scalenohedral crystal
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis

Pseudoboleite
RRUFF ID: R050162
Ideal Chemistry: Pb2+31Cu2+24Cl62(OH)48
Locality: Margarita mine, Sierra Gorda, Antofagasta, Chile
Source: Jim McGlasson
Owner: RRUFF
Description: Blue crust, associated with yellow penfieldite, R050163
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Pseudoboleite samples (2) ]

Pseudoboleite
RRUFF ID: R130548
Ideal Chemistry: Pb2+31Cu2+24Cl62(OH)48
Locality: Sierra Gorda, Antofagasta, Chile
Source: Bob Jenkins
Owner: RRUFF
Description: Indigo blue cubic or short prismatic crystals, associated with colorless quartz
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Pseudoboleite samples (2) ]

Pseudobrookite
RRUFF ID: R050563
Ideal Chemistry: (Fe3+2Ti4+)O5
Locality: Thomas Range, Juab County, Utah, USA
Source: Dave Bunk Minerals
Owner: RRUFF
Description: Black elongated prismatic crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Pseudobrookite (6) ]
Quick search: [ All Pseudobrookite samples (3) ]

Pseudobrookite
RRUFF ID: R120173
Ideal Chemistry: (Fe3+2Ti4+)O5
Locality: Nuestra Señora del Carmen Mines, La Celia, Jumilla, Murcia, Spain
Source: Bob Jenkins
Owner: RRUFF
Description: Dark brown tabular, associated with R120174 enstatite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Pseudobrookite (6) ]
Quick search: [ All Pseudobrookite samples (3) ]

Pseudobrookite
RRUFF ID: R140974
Ideal Chemistry: (Fe3+2Ti4+)O5
Locality: Emmelberg, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Source: Ch. and H. Schäfer
Owner: RRUFF
Description: Dark brown tabular or elongated crystals. Associated with sanidine and mullite (supposedly).
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Pseudobrookite (6) ]
Quick search: [ All Pseudobrookite samples (3) ]

Pseudograndreefite
RRUFF ID: R100006
Ideal Chemistry: Pb2+6(S6+O4)F10
Locality: Grand Reef mine, Klondyke, Aravaipa District, Graham County, Arizona, USA
Source: Natural History Museum of Los Angeles County LACMNH 33608
Owner: RRUFF
Description: Colorless crystal fragments from the type specimen, associated with laurelite R100035 and grandreefite R100012. Photo of type specimen is courtesy of LACMNH.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Pseudolaueite
RRUFF ID: R170035
Ideal Chemistry: Mn2+Fe3+2(PO4)2(OH)2·8H2O
Locality: Crooker Quarry, Newry, Maine, USA
Source: Van King
Owner: RRUFF
Description: Pale yellow-orange prismatic to thick tabular pseudohexagonal crystals, associated with albite
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Stewartite (2) ]

Pseudomalachite
RRUFF ID: R040175
Ideal Chemistry: Cu2+5(PO4)2(OH)4
Locality: West Bogan mine, Tottenham, Australia
Source: University of Arizona Mineral Museum 12558
Owner: RRUFF
Description: Green massive in a botryoidal shape
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Pseudomalachite samples (3) ]

Pseudomalachite
RRUFF ID: R050264
Ideal Chemistry: Cu2+5(PO4)2(OH)4
Locality: Cerro Morita, 27 km southwest of Agua Prieta, Sonora, Mexico
Source: Marcus Origlieri
Owner: RRUFF
Description: Blue powdery crust
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Pseudomalachite samples (3) ]

Pseudomalachite
RRUFF ID: R050597
Ideal Chemistry: Cu2+5(PO4)2(OH)4
Locality: Cerro Negro mine, Carrizalillo, Chile
Source: William W. Pinch
Owner: RRUFF
Description: Dark-green tabular crystals associated with chalcosiderite, R060007
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Pseudomalachite samples (3) ]

Pseudowollastonite
RRUFF ID: R070762
Ideal Chemistry: CaSiO3
Locality: Dredged from Tampa Bay harbour, Tampa Bay, Florida, USA
Source: Paul Roth
Owner: RRUFF
Description: White massive associated with barringerite, R070439
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Quick search: [ All Pseudowollastonite samples (2) ]

Pseudowollastonite
RRUFF ID: R080145
Ideal Chemistry: CaSiO3
Locality: Synthetic
Source: Hexiong Yang
Owner: RRUFF
Description: Colorless synthetic crystal fragments from the study by Yang and Prewitt (1999)
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Pseudowollastonite samples (2) ]

Pucherite
RRUFF ID: R060824
Ideal Chemistry: Bi3+V5+O4
Locality: Pucher Shaft, Wolfgang Maaßen mine field, Schneeberg District, Saxony, Germany
Source: Michael Scott S101166
Owner: RRUFF
Description: Brown tabular crystals associated with green namibite. Pale yellow crust is also pucherite.
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Scheelite (17) ]
Quick search: [ All Pucherite samples (2) ]

Pucherite
RRUFF ID: R080137
Ideal Chemistry: Bi3+V5+O4
Locality: Fazenda da Posse, Sao Jose do Brejauba, Minas Gerais, Brazil
Source: Luiz Menezes
Owner: RRUFF
Description: Reddish brown tabular crystals associated with greenish yellow bismutite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Scheelite (17) ]
Quick search: [ All Pucherite samples (2) ]

Pumpellyite-(Al)
RRUFF ID: R070131
Ideal Chemistry: Ca2Al3(SiO4)(Si2O7)(OH,O)2·H2O
Locality: La Flèche Quarry, Bertrix, Luxembourg Province, Belgium
Source: Michael Scott S100425
Owner: RRUFF
Description: Pale green radiating fibrous to bladed crystals
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Pumpellyite (6) ]

Pumpellyite-(Mg)
RRUFF ID: R070130
Ideal Chemistry: Ca2MgAl2(SiO4)(Si2O7)(OH)2·H2O
Locality: Isle Royale National Park, Lake Superior, Keweenaw County, Michigan, USA
Source: Michael Scott S100404
Owner: RRUFF
Description: Green waterworn massive pebble
Status: The identification of this mineral has been made only by X-ray diffraction.
Mineral Group: [ Pumpellyite (6) ]
Quick search: [ All Pumpellyite-(Mg) samples (2) ]

Pumpellyite-(Mg)
RRUFF ID: R120172
Ideal Chemistry: Ca2MgAl2(SiO4)(Si2O7)(OH)2·H2O
Locality: Archidona, Malaga Province, Spain
Source: Bob Jenkins
Owner: RRUFF
Description: Aggregates of dark-green acicular crystals, associated with light green epidote
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Pumpellyite (6) ]
Quick search: [ All Pumpellyite-(Mg) samples (2) ]

Pyracmonite
RRUFF ID: R220027
Ideal Chemistry: (N3-H4)3Fe3+(S6+O4)3
Locality: Burnside, Northumberland Co., Pennsylvania, USA
Source: Rock Currier
Owner: RRUFF
Description: Sprays of colorless to white acicular or prismatic crystals, associated with yellow carlsonite (R220026).
Status: The identification of this mineral has been confirmed by X-ray diffraction.
Mineral Group: [ Pyracmonite (1) ]

Pyrargyrite
RRUFF ID: R050290
Ideal Chemistry: Ag1+3Sb3+S2-3
Locality: San Guillermo Vein, Cueva Santa area, San Luis Shaft, Proaño mine, Fresnillo, Zacatecas, Mexico
Source: Dave Bunk Minerals
Owner: RRUFF
Description: Prismatic single crystal, deep red color on freshly broken surface
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Quick search: [ All Pyrargyrite samples (2) ]

Pyrargyrite
RRUFF ID: R050318
Ideal Chemistry: Ag1+3Sb3+S2-3
Locality: unknown
Source: Eugene Schlepp
Owner: RRUFF
Description: Black prismatic crystal
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Pyrargyrite samples (2) ]

Pyrimethamine
RRUFF ID: D120004
Ideal Chemistry: C12H13ClN4
Locality: Synthetic from Fluka
Source: David Blake
Owner: RRUFF
Description: Coarse colorless powder. Pyrimethamine is a medication used for protozoal infections. It is commonly used as an antimalarial drug.
Status: The identification of this mineral is not yet confirmed.

Pyrite
RRUFF ID: R050070
Ideal Chemistry: Fe2+(S2)2-
Locality: Mina San Jose de Huanzala, Minero de Huallanca District, Department de Huanuco, Peru
Source: Rock Currier
Owner: RRUFF
Description: Brass-yellow metallic cube
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Pyrite (16) ]
Quick search: [ All Pyrite samples (5) ]

Pyrite
RRUFF ID: R050190
Ideal Chemistry: Fe2+(S2)2-
Locality: Huanzala mine, Huallanca District, Dos de Mayo Province, Huanuco Department, Peru
Source: Dave Bunk Minerals
Owner: RRUFF
Description: Brass yellow modified cubes with typical pyrite striations
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Pyrite (16) ]
Quick search: [ All Pyrite samples (5) ]

Pyrite
RRUFF ID: R070692
Ideal Chemistry: Fe2+(S2)2-
Locality: Pohla, Schwarzenberg, Erzebirge, Saxony, Germany
Source: James Shigley
Owner: RRUFF
Description: Yellow-brown metallic prismatic crystals with light blue tarnish, pseudomorph after argentopyrite. Even though they look like good crystals, the sample is extremely fine-grained.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Pyrite (16) ]
Quick search: [ All Pyrite samples (5) ]

Pyrite
RRUFF ID: R080030
Ideal Chemistry: Fe2+(S2)2-
Locality: Schaft 209, Aue, Niederschlema, Erzgebirge, Saxony, Germany
Source: William W. Pinch
Owner: RRUFF
Description: Dark-bronze and blue, tarnished pseudohexagonal prisms; bright grey when a fresh surface is exposed. Associated with wire silver. These crystals were labeled argentopyrite, but are pseudomorphs.
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Pyrite (16) ]
Quick search: [ All Pyrite samples (5) ]

Pyrite
RRUFF ID: R100166
Ideal Chemistry: Fe2+(S2)2-
Locality: Boston Consolidated mine, Bingham Canyon, 20 mi SSW of Salt Lake City, Salt Lake County, Utah, USA
Source: Harvard microprobe standard, Mineralogical Museum, Harvard University 87957
Owner: RRUFF
Description: Brass-yellow pyritohedron
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Pyrite (16) ]
Quick search: [ All Pyrite samples (5) ]

Pyroaurite
RRUFF ID: R100053
Ideal Chemistry: Mg6Fe3+2CO3(OH)16·4H2O
Locality: Langban, Filipstad, Varmland, Sweden
Source: William W Pinch
Owner: RRUFF
Description: Pale bluish-green hexagonal tablets embedded in calcite, associated with magnetite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Hydrotalcite (22) ]
Quick search: [ All Pyroaurite samples (2) ]

Pyroaurite
RRUFF ID: R120011
Ideal Chemistry: Mg6Fe3+2CO3(OH)16·4H2O
Locality: Scotch Lake quarry, Scotch Lake, Cape Breton County, Nova Scotia, Canada
Source: Donald Doell
Owner: RRUFF
Description: Orange hexagonal tablets
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Hydrotalcite (22) ]
Quick search: [ All Pyroaurite samples (2) ]

Pyrobelonite
RRUFF ID: R080057
Ideal Chemistry: Pb2+Mn2+V5+O4(OH)
Locality: Ty Coch Manganese mine, Glamorgan County, Wales, United Kingdom
Source: Michael Scott S101174
Owner: RRUFF
Description: Fiery-red grains on light-pink calcite vein
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ descloizite (10) ]
Quick search: [ All Pyrobelonite samples (2) ]

Pyrobelonite
RRUFF ID: R100056
Ideal Chemistry: Pb2+Mn2+V5+O4(OH)
Locality: Langban, Filipstad, Varmland, Sweden
Source: William W Pinch
Owner: RRUFF
Description: Isolated red blocky crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ descloizite (10) ]
Quick search: [ All Pyrobelonite samples (2) ]

Pyrochlore
RRUFF ID: R060151
Ideal Chemistry: Ca2Nb2O7
Locality: Oka, Quebec, Canada
Source: Marcus Origlieri
Owner: RRUFF
Description: Reddish-brown octahedral crystals associated with calcite
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ pyrochlore (28) ]
Quick search: [ All Pyrochlore samples (5) ]

Pyrochlore
RRUFF ID: R060165
Ideal Chemistry: Ca2Nb2O7
Locality: Betafo, Madagascar
Source: Marcus Origlieri
Owner: RRUFF
Description: Red-brown octahedon superficially altered yellow, chemistry does not match any IMA approved mineral name.
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ pyrochlore (28) ]
Quick search: [ All Pyrochlore samples (5) ]

Pyrochlore
RRUFF ID: R080050
Ideal Chemistry: Ca2Nb2O7
Locality: Hackman Valley, Yukspor Mountain, Khibiny, Kola, Russia
Source: Michael Scott S100981
Owner: RRUFF
Description: Dark brown irregular grains on microcline
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ pyrochlore (28) ]
Quick search: [ All Pyrochlore samples (5) ]

Pyrochlore
RRUFF ID: R080058
Ideal Chemistry: Ca2Nb2O7
Locality: Samiresy, Madagascar
Source: Michael Scott S101367
Owner: RRUFF
Description: Orange octahedron, amorphous
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ pyrochlore (28) ]
Quick search: [ All Pyrochlore samples (5) ]

Pyrochlore
RRUFF ID: R070742
Ideal Chemistry: Ca2Nb2O7
Locality: Alakurtti pegmatite, North Karelia, Murmanskaja Oblast', Northern Region, Russia
Source: Michael Scott S103042
Owner: RRUFF
Description: Vitreous brown metamict fragments
Status: The identification of this mineral has been made only by X-ray diffraction.
Mineral Group: [ pyrochlore (28) ]
Quick search: [ All Pyrochlore samples (5) ]

Pyrochroite
RRUFF ID: R100045
Ideal Chemistry: Mn2+(OH)2
Locality: N'Chwaning II mine, Kalahari Manganese Field, Northern Cape Province, South Africa
Source: Marcus Origlieri
Owner: RRUFF
Description: Red platy crystals frozen in matrix
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Brucite (5) ]

Pyrolusite
RRUFF ID: R040153
Ideal Chemistry: Mn4+O2
Locality: San Carlos mine, Mapimi, Durango, Mexico
Source: University of Arizona Mineral Museum 4047
Owner: RRUFF
Description: Gray massive with small crystals in crevices
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Rutile (23) ]
Quick search: [ All Pyrolusite samples (3) ]

Pyrolusite
RRUFF ID: R050361
Ideal Chemistry: Mn4+O2
Locality: Serra do Navio, Amapa, Brazil
Source: University of Arizona Mineral Museum 11514
Owner: RRUFF
Description: Black prismatic crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Rutile (23) ]
Quick search: [ All Pyrolusite samples (3) ]
Displaying: 3001 - 3100 ‹‹ Prev   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ‹31› 32 33 34 35 36 37 38 39 40 41 42 43   Next ››
4216 Records Found
Search Again: