Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Polycrase-(Y)

This page is currently not sponsored. Click here to sponsor this page.
Formula:
(Y,U)(Ti,Nb)2O6
System:
Amorphous
Colour:
Black
Hardness:
5 - 6
Name:
From the Greek πολύς, many, and κράσις, mixture.
Metamict (X-ray amorphous) mineral that is mainly found in pegmatites.
Only very rarely, crystalline (with incipient metamictisation) samples have been reported (Johnson et al., 1999).
U-dominant analogue is uranopolycrase.

May be confused with aeschynite-(Y), which has a similar composition and may be partly metamict, depending on its U and Th contents.

Classification of Polycrase-(Y)

Approved
4.DG.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
8.3.8.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.4.8

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
mindat.org URL:
http://www.mindat.org/min-3257.html
Please feel free to link to this page.

First Recorded Occurrence of Polycrase-(Y)

Physical Properties of Polycrase-(Y)

Vitreous, Greasy, Sub-Metallic
Colour:
Black
Streak:
Yellowish, grayish, reddish brown
Hardness (Mohs):
5 - 6
Fracture:
Conchoidal, Sub-Conchoidal
Density:
4.9 - 5.1 g/cm3 (Measured)    

Crystallography of Polycrase-(Y)

Crystal System:
Amorphous
Morphology:
Stout prismatic [001], sometimes flattened {010}. The faces are striated parallel to their intersection with {010}. Often in parallel or subparallel and slightly radial aggregates of crystals. Massive.
Twinning:
1. On {201}, common. The twins are flattened {010} and striated [001] 2. Possibly on {101}, rare. 3. Possibly on {013}.
Comment:
Generally metamict. A crystalline sample from Mount Malosa is orthorhombic, space group Pbcn, with a = 14.6673(12), b = 5.5925(4) and c = 5.1888(4) Å (Johnson et al. 1999).

Crystallographic forms of Polycrase-(Y)

Crystal Atlas:
Image Loading
Click on an icon to view
Polycrase-(Y) no.1 - Goldschmidt (1913-1926)
Polycrase-(Y) no.7 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Optical Data of Polycrase-(Y)

Type:
Isotropic

Chemical Properties of Polycrase-(Y)

Formula:
(Y,U)(Ti,Nb)2O6
Essential elements:
All elements listed in formula:
Common Impurities:
Ca,Ce,U,Th,Ta

Relationship of Polycrase-(Y) to other Species

Series:
Forms a series with Euxenite-(Y) (see here)
4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
4.DG.05Fersmite(Ca,Y)(Nb,Ta,Ti)2(O,OH)6
4.DG.05Kobeite-(Y)(Y,Zr)2(Ti,Fe3+)2(O,OH)7
4.DG.05Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
4.DG.05Tanteuxenite-(Y)(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
4.DG.05Uranopolycrase(U4+,Y)(Ti,Nb)2O6
4.DG.05Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
4.DG.10Fergusonite-(Y)-βYNbO4
4.DG.10Fergusonite-(Nd)-β(Nd,Ce)NbO4
4.DG.10Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
4.DG.10Yttrotantalite-(Y)(Y,Ca,U4+,Fe2+)2(Ta,Nb)2O8
4.DG.10Beta-Fergusonite-(Nd)
4.DG.15Foordite(Sn,Pb)(Nb,Ta)2O6
4.DG.15Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6
4.DG.20RaspitePb(WO4)
18.4.1Uranpyrochlore (of Hogarth 1977)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
18.4.2Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
18.4.3Yttrotantalite-(Y)(Y,Ca,U4+,Fe2+)2(Ta,Nb)2O8
18.4.4IshikawaiteU4+Fe2+Nb2O8
18.4.5Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
18.4.6Tanteuxenite-(Y)(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
18.4.7Kobeite-(Y)(Y,Zr)2(Ti,Fe3+)2(O,OH)7
18.4.9Yttropyrochlore (of Hogarth 1977)
18.4.10Calciobetafite (of Mazzi & Munno)
18.4.11Yttrobetafite (of Hogarth 1977)
18.4.12Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8

Other Names for Polycrase-(Y)

Name in Other Languages:
Simplified Chinese:复稀金矿
Spanish:Polycrasita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Polycrase-(Y)

Reference List:
Scheerer (1844), Ann. Phys.: 62: 430.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 787-792.

Johnson, O., Stahl, K., Petersen, O. V., Micheelsen, H. I. (1999): Structure refinement of natural non-metamict polycrase-(Y) from Zomba-Malosa complex, Malawi. Neues Jahrb. Mineral., Monatsh. 1999, 1-10.

Internet Links for Polycrase-(Y)

Localities for Polycrase-(Y)

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Obersulzbach valley
        • Hopffeld area
A. Strasser: Die Minerale Salzburgs (1989)
      • Untersulzbach valley
        • Abichl Alp - Beryller area
Mineralien-Welt 20 (2), 17-18
Brazil
 
  • Minas Gerais
Fernando Brederodes Collection
Polycrase specimen in the British Museum of Natura History #1927,177 [Rock Currier 2010]
Canada
 
  • Northwest Territories
    • Mackenzie District
      • Blachford Lake alkaline complex
SHEARD, E.R., WILLIAMS-JONES, A.E., HEILIGMANN, M., PEDERSON, C. AND TRUEMAN, D.L. (2012) Controls on the concentration of zirconium, niobium, and the rare earth elements in the Thor Lake rare metal deposit, Northwest Territories, Canada. Economic Geology, 107(1), 81-104.
Sheard, E.R. (2010); SHEARD, E.R., WILLIAMS-JONES, A.E., HEILIGMANN, M., PEDERSON, C. AND TRUEMAN, D.L. (2012) Controls on the concentration of zirconium, niobium, and the rare earth elements in the Thor Lake rare metal deposit, Northwest Territories, Canada. Economic Geology, 107(1), 81-104.
  • Ontario
    • Haliburton Co.
      • Cardiff Township
G. Pouliot, J. A. Maxwell, and S. C. Robinson (1964): Cenosite from Bancroft, Ontario. Canadian Mineralogist 8, 1-10.
  • Québec
    • Abitibi-Témiscamingue
      • Abitibi RCM
        • La Corne
Anne P. Sabina, Rocks and Minerals for the Collector Miscellaneous Report 77, 2003, Geological Survey of Canada.
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
Hilderley, M., Ercit, T.S., Rowe, R.A. (2006) 33rd Rochester Mineralogical Symposium, abstracts, 13-14.
China
 
  • Inner Mongolia Autonomous Region
    • Tongliao League (Tongliao Prefecture)
      • Jarud Banner (Zalute Co.)
        • Baerzhe complex
Zhongxin Yuan and Ge Bai (1997): Geology and Prospecting 33(1), 42-48
  • Jiangxi Province
    • Ganzhou Prefecture
      • Xunwu Co.
Yunhuai Lin (1986): Geology and Prospecting 22(4), 22-28
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • South Bohemia Region
      • Písek
Škoda R., Novák M., Cícha J., Uranium-niobium-rich alteration products after “písekite”, an intimate mixture of Y,REE,Nb,Ta,Ti-oxide minerals from the Obrázek I pegmatite, Písek, Czech Republic Journal of Geosciences, 56 (2011), 3, 317 - 325
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Třebíč
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Laach lake volcanic complex
        • Kruft
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
        • Mendig
          • Niedermendig
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
            • Wingertsberg
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
  • Saxony
    • Oberlausitz
      • Löbau
        • Czorneboh
          • Cunewalde
            • Schönberg
Witzke, T., Giesler, T. (2008): Neufunde und Neubestimmungen aus der Lausitz, Der Aufschluss, Vol. 59, 245-252
Italy
 
  • Lombardy
    • Sondrio Province
      • Valchiavenna
        • Novate Mezzola
          • Codera Valley
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
Ghizzoni, S. & Mazzoleni, G. (2005): Itinerari mineralogici in val Codera. Geologia Insubrica, Ed., Milano, 316 pp.
  • Piedmont
    • Torino Province
      • Luserna San Giovanni
- Finello, G., Ambrino, P., Kolitsch, U., Ciriotti, M.E., Blaß, G., Bracco, R. (2007): I minerali della “Pietra di Luserna”, Piemonte, Italia nord-occidentale. I. Alcune cave di gneiss della Val Luserna. Micro (località), 2/2007, 181-226.
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Oltrefiume
          • Mount Camoscio
Grill, E. (1935): I minerali del granito di Baveno, la fayalite. Periodico di Mineralogia, 129-133. - Gallitelli, P. (1936): Le miche del granito di Baveno. . Periodico di Mineralogia, 61-76 - Pagliani, G. (1948): Le Zeoliti del granito di Baveno. Periodico di Mineralogia, 175-188. - Ravagnani, D. (1974): I giacimenti uraniferi italiani - Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale di Milano, Ed., Milano, 188 pp. - min. Rec. 14 (3), 157-168 - Am. Min. 83, 1330-1334 (1998) - Am. Min. 84, 782-789 (1999). - Guastoni, A. & Pezzotta, F. (2004): Kristiansenite a Baveno, second ritrovamento Mondiale della specie. Rivista Mineralogica Italiana, 4/2004, 247-251. - Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 145, 59-68. - Mineralogist americano (2005) 90, 1442-1452.
Domenico Preite specimen
      • Ossola Valley
        • Vigezzo Valley
          • Toceno
            • Val di Crana
Rivista Mineralogica Italiana, 23 (1), 42-49.
      • Stresa
Sergio Varvello collection
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
Orlandi et al., 1990. Nb-Ta oxides from Elba Island pegmatites. Atti Soc. Tosc. Sci. Nat., Mem., Serie A, 97: 161-173
P. Orlandi, M. Pasero, N. Perchiazzi (1990) - Nb-Ta oxides from Elba Island pegmatites. - Atti Soc. Tosc. Sc. Nat., Mem. serie A, v.97: 161-173.
Ref: Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo.
Japan
 
  • Honshu Island
    • Tohoku Region
      • Fukushima Prefecture
Introduction to Japanese Minerals (Geological Survey of Japan, 1970)
Keiichi Omori; Shuzo Hasegawa (1955) Chemical Compositions of the Mineral Belonging to Euxenite -Polycrase Series from the Nekonaki Pegmatites in Ishikawa Town, Fukushima Prefecture. Journal of the Mineralogical Society of Japan; 2:268-274; (Japanese)
Malawi
 
  • Zomba District
Johnson, O., Stahl, K., Petersen, O. V., Micheelsen, H. I. (1999): Structure refinement of natural non-metamict polycrase-(Y) from Zomba-Malosa complex, Malawi. Neues Jahrb. Mineral., Monatsh. 1999, 1-10.
Mongolia
 
  • Dornogovi Aimag
Pavel M. Kartashov analytical data
Namibia
 
  • Erongo Region
    • Swakopmund District
      • Arandis
Irene M. Abraham (2009): Geology and spatial distribution of uranium mineralisation in the SK anomaly area, Rossing area, Namibia, Master thesis University of the Witwatersrand.
Norway
 
  • Aust-Agder
    • Evje og Hornnes
      • Åmland
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. p. 79
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. p. 79
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. p. 79
      • Landsverk
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. p. 96; Neumann, H. (1985): Norges Mineraler. Norges geologiske Undersøkelse Skrifter 68, p.79
Revheim, O. (2006): Landsverk 1, Jokeli-bruddet i Evje. Norsk Bergverksmuseum Skrift. 33: 41-50
    • Iveland
      • Eretveit
Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, p 96
Revheim, O. (2007): Slobrekka, Iveland. [Del 2]. STEIN 34 (1), 3-5
Collection of the Iveland Municipality # IKM_051
http://www.mindat.org/photo-454291.html
      • Ljosland
        • Knipan (Knipane)
Nordrum, F.S.(2000): Nyfunn av mineraler i Norge 1999-2000. Bergverksmuseets Skrift 17: 59-63
Breivik, H., Myre, K. & Gunnufsen, K. (2010): Gammelt og nytt, stort og smått fra Storsynken, Knipane, Iveland. Norsk Bergverksmuseum Skrift. 43: 88-93
Olav Revheim specimen & photo
      • Skripeland
Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
  • Nordland
    • Tysfjord
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
  • Rogaland
    • Eigersund
      • Kjervall
Andresen, P. (1990): Fra Steinrøysa. STEIN 17 (4),36
    • Lund
      • Ualand
        • Ollestad
Schetelig, J. (1922): Gadolinit. in Brøgger, W.C, Vogt, Th. & Schetelig, J. (1922): Die Mineralien der südnorwegischen Granitpegmatitgänge. II. Silikate der seltenen Erde. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1922. 11, 88-123
    • Sokndal
Andresen, P. (1990): Fra Steinrøysa. STEIN 17 (4), 36
Andresen, P. (1990): Fra Steinrøysa. STEIN 17 (4),36
  • Sogn og Fjordane
    • Luster
      • Berdalen
        • Hurrungane
Selbekk, R.S., Spurgin, S. and Lundmark, M. (2006): Beryll-allanitt-(Ce) pegmatittene i Berdalen, Hurrungane. Stein, 33 (1): 28-31
  • Telemark
    • Drangedal
      • Tørdal
Kristiansen, R. (2009): A unique assemblage of Scandium-bearing minerals from the Heftetjern-pegmatite, Tørdal, south Norway. Norsk Bergverksmuseum Skrifter, 41, 75-104.
  • Vest-Agder
    • Flekkefjord
      • Hidra (Hitterø)
        • Hæstad
Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116
Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116
Scheerer, T. (1844): Polykras und Malakon, zwei neue Mineralspecies, Annalen der Physik und Chemie (Herausgegeben zu Berlin von J. C. Poggendorff), Vol. 138, 429-443 - Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6, p. 96
Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116
Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116
Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6: p 96
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Dzierżoniów District
      • Piława Górna (Ober Peilau; Gnadenfrei)
PIECZKA et al. 2010: Nb-Ta minerals in pegmatites in the DSS mine at Piława Górna, Góry Sowie Block, southwestern Poland. Mineralogia - Special Papers, 37.
Portugal
 
  • Azores District
    • San Miguel Island
Samples collected by Luigi Chiappino and analysed by Dr. Anthony Kampf, Natural History Museum of Los Angeles County, USA
Romania
 
  • Harghita Co.
    • Ditrău (Ditró)
Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
    • Gheorgheni
Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
        • Krasnyi Chikoy
Fialova, D., Kremplova, M., Hynek, D., Konecna, M., Kaiser, J., Malina, R., ... & Adam, V. (2013). Sosedka Pegmatite Metal Ions Composition Determined by Voltammetry. Int. J. Electrochem. Sci, 8, 7853-7867.
Badanina, E.V., Gordienko, V.V., Wiechowski, A., and Friedrich, G. (2008): Geology of ore Deposits 50(8), 772-781.
Slovakia
 
  • Košice Region
    • Rožňava Co.
Uher P., Malachovský P., Bačík P., Chudík P. & Števko M. (2009): Polykras-(Y), uranopolykras a Ti-Nb-Ta-Fe minerál v kremenných žilách a exokontaktných zónach granitov gemerika, Slovenské rudohorie. Bull. mineral-petrolog. Odd. Nár. Muz. (Praha), 17, 1, 14-24.
Uher P., Malachovský P., Bačík P., Chudík P. & Števko M. (2009): Polykras-(Y), uranopolykras a Ti-Nb-Ta-Fe minerál v kremenných žilách a exokontaktných zónach granitov gemerika, Slovenské rudohorie. Bull. mineral-petrolog. Odd. Nár. Muz. (Praha), 17, 1, 14-24.
South Africa
 
  • Northern Cape Province
    • Namakwa District (Namaqualand)
Minerals of South Africa
Minerals of South Africa
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa. 206.
    • ZF Mgcawu District
Minerals of South Africa
        • Steyns Put
Minerals of South Africa
South Korea
 
  • Chungcheongbukdo (Chungchong-pukto)
    • Chungju (Chung Won Kum; Chung-ju)
      • Joongwon-gun
        • Mt. Eorae
P.M. Kartashov data
    • Goesan-gun (Koesan-gun)
Gi Young Jeong (2006): Mineralium Deposita 41, 469-481.
Spain
 
  • Galicia
    • Pontevedra
      • Ponteareas
Calvo, M., Viñals, J. and Vila, F. (2009) Mineralogy of the pegmatites and miarolitic cavities in the granitic batholit of Porriño, Pontevedra, galicia, Spain. Mineral Up, (2009-1), 6-23
Sweden
 
  • Lappland
    • Jokkmokk
Gunnar Farber
  • Norrbotten
    • Pajala
  • Småland
    • Vetlanda
      • Alseda
        • Slättåkra
Blomstrand 1878
  • Uppland
    • Vaxholm
      • Resarö
No reference listed
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Chummibort
See references at locality description - cuchet et al. 2014, Schweizer Strahler. I am co-author - M. Crumbach
USA
 
  • Arizona
    • Maricopa Co.
      • Buckeye Hills District
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 41, 112.
    • Mohave Co.
      • Aquarius Mts (Aquarius Range; Peacock Range)
Hanson, S.L., Simmons, W.B., Falster, A.U. (2006) 33rd Rochester Mineralogical Symposium, abstracts, 18-19.; Brown, TJ, "Geology & Geochemistry of the Kingman Feldspar, Rare Metals and Wagon Bow Pegmatites" (2010). University of New Orleans Theses and Dissertations. Paper 1280.
Parker, R. L., 1963, Niobium and Tantalum in the US, USGS Mineral Investigations map MR – 3.
      • Lost Basin Mts (Lost Basin Range)
        • Lost Basin District
          • Garnet Mountain
Theodore, T.G., et al (1987), USGS PP 1361: 98; Reyner (1954), US Atomic Energy Comm. Rept. RME-158, Recon. for Uranium in Mohave Co., AZ: 43.
Parker, R. L., 1963, Niobium and Tantalum in the US, USGS Mineral Investigations map MR – 3.
    • Yavapai Co.
MRDS database Dep. ID #10064167, MRDS ID #TC38436.
  • California
    • Los Angeles Co.
      • Pearblossom
Hewett, Donnel Foster, Stone, J., and Stieff, L.R. (1969) The ages of three uranium minerals, Mojave Desert, California. USGS Prof. Paper 650-B: 86; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 180.
  • Colorado
    • Chaffee Co.
      • Buena Vista
Rocks & Min.: 64: 471.
Eckel, E. B.(1997): Minerals of Colorado. [Updated and revised edition]. Fulcrum Publishing. 665 pages.
          • Newett
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) Eckel, E. B.
    • Gunnison Co.
      • Tomichi District
Minerals of Colorado (1997) Eckels, E. B.
    • Pitkin Co.
      • Columbia District
Rudy Bologna
    • Saguache Co.
      • Crestone District
Minerals of Colorado (1997) E.B. Eckels
      • Hayden Pass Area
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) E.B. Eckels
  • Idaho
    • Boise Co.
R&M 70:4 pp 242-263
      • Boise Basin District
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
      • Idaho City District
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
      • Redfish Lake area
        • Unorganized District
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
  • Maine
    • Sagadahoc Co.
      • Topsham
Rocks & Min. Vol.71,No.3, p.195
  • New Mexico
    • Rio Arriba Co.
Michael N. Spilde, Steve Dubyk, Brian Salem, and William P. Moats, (2011) Rare earth bearing-minerals of the Petaca district, Rio Arriba County, New Mexico. New Mexico Geological Society Fall Field Conference Guidebook – 62 Geology of the Tusas Mountains and Ojo Caliente pp. 389-398.
        • La Jarita-Apache area
Michael N. Spilde, Steve Dubyk, Brian Salem, and William P. Moats, (2011) Rare earth bearing-minerals of the Petaca district, Rio Arriba County, New Mexico. New Mexico Geological Society Fall Field Conference Guidebook – 62 Geology of the Tusas Mountains and Ojo Caliente pp. 389-398.
  • New York
    • Saratoga Co.
Jensen (1978) Minerals of New York State, p.165; Am Min (1947) 32:585-587
      • Overlook
Jensen (1978) Minerals of New York State; Rocks & Minerals 82:472-483
  • North Carolina
Genth,F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74
      • Zirconia (Tuxedo Station)
Wilson,W.F, and McKenzie,B.J,1978, Mineral Collecting Sites in North Carolina
U.S Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995
      • Zirconia Pegmatite District
        • Tuxedo
Wilson,W.F.,and McKenzie,B.J. ,1978,Mineral Collecting Sites in North Carolina, Information Circular 24
  • South Carolina
Gems and Minerals of America-Jay Ellis Ransom-1974
  • Texas
    • Burnet Co.
Self-Collected by Franklin Roberts
    • Llano Co.
      • Bluffton
Am Min (1932) Volume 17, pages 381-390,
  • Washington
    • Grant Co.
      • Grand Coulee Dam area
Cannon, B. (1975): Minerals of Washington, p.62,88
  • Wisconsin
    • Marathon Co.
      • Wausau Intrusive Complex
        • Nine Mile Pluton
www.uwrf.edu/~wc01
    • Wood Co.
      • Cary Mound quarries
Buchholz, T.W., Falster, A.U., Simmons, W.B. (2006) 33rd Rochester Mineralogical Symposium, abstracts, 18-19.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 29, 2015 13:32:55 Page generated: March 27, 2015 09:54:15