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Picotite

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Formula:
(Fe,Mg)(Al,Cr)
 
2
O
 
4
A variety of Hercynite

Magnesian Chromian Hercynite

Classification of Picotite

IMA status:Rejected
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Chemical Properties of Picotite

Formula:
(Fe,Mg)(Al,Cr)
 
2
O
 
4
Simplified for copy/paste:(Fe,Mg)(Al,Cr)2O4
Essential elements:Al, Fe, O
All elements listed in formula:Al, Cr, Fe, Mg, O

Other Names for Picotite

Synonyms:
Chrome Ceylonite
Other Languages:
German:Picotit
Simplified Chinese:铬尖晶石
Spanish:Picotita
Varieties:
ChrompicotiteCobaltochrompicotite

Other Information

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

Internet Links for Picotite

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  • Localities for Picotite

    The 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. ? 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.
    Algeria
     
    • Tamanghasset Province
      • Ahaggar Mtn (Hoggar Mtn)
        • In Ouzzal
    M. Guiraud, J.R. Kienast, A. Rahmani : "Petrological study of high-temperature granulites from In Ouzal, Algeria : some implications on the phase relationships in the FMASTOCr system", Eur. J. Mineral. , 1996, 8, 1375-1390.
        • Laouni
    J.P. Lorand and J.Y. Cottin, Bull. Minéral. , 1987, 110, pp. 373-378.
    Antarctica
    AmMin 36:361-367
    • Eastern Antarctica
      • Enderby Land
    Eur. J. Mineral. , 1991, 3, pp. 367-386.
    Austria
     
    • Carinthia
      • St Paul im Lavanttal
        • Kollnitz
    J. E. Zirkl: Der Karinthin 43/44:175-188 (1961)
    • Lower Austria
      • Mostviertel
        • Dunkelstein Forest
          • Paudorf
            • Meidling
    Eur. J. Mineral. , 1991, 3, pp. 323-342.
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Salzburg
      • Hohe Tauern
        • Habach Valley
          • Nasenkopf
            • Leckbachgraben (Leckbachrinne)
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
      • Wolfgang Lake
    A. Strasser: Die Minerale Salzburgs (1989)
    • Styria
      • Bad Gleichenberg
        • Kapfenstein
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
        • Klause
    Aufschluss 1972(SB), 52-55
    • Upper Austria
      • Steyr-Land
    - E.Reiter, in: Mineralogie (Oberösterreichs 1930 – 1982). Jahrbuch des oberösterreichischen Musealvereines 128 / 1, Sonderdruck, Linz 1983, Seite 333 - 341.
    Brazil
     
    • Pernambuco
      • São Pedro e São Paulo archipelago
    Washington, H.S. (1929) The American Mineralogist, 14, 369-372.
    Bulgaria
     
    • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
      • Kirkovo Obshtina
    [var: Chrompicotite] I. Kostov, V. Breskovska, J. Mincheva-Stefanova, G. Kirov (1964): Minerals of Bulgaria. Sofia, Bulgaria, 540 pp. (in Bulgarian).
    Cambodia
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    • Krong Pailin Municipality (Pailin Municipality)
    Eldridge M. Moores, Rhodes Whitmore Fairbridge (1997) Encyclopedia of European and Asian regional geology
    • Môndól Kiri Province (Mondulkiri Province)
    Eldridge M. Moores, Rhodes Whitmore Fairbridge (1997) Encyclopedia of European and Asian regional geology
    Chile
     
    • Antofagasta Region
      • El Loa Province
        • San Pedro volcano
    C. Lemanski, Jr. (re-entry of lost Mindat data).
    China
     
    • Qinghai Province
      • Golog Autonomous Prefecture (Guoluo Autonomous Prefecture)
        • Maqên Co.
          • Dur'ngoi Ophiolite
    Zhang Wusheng and Chen Jie (1996): Qinghai Guotu Jinglue 5(1)
    • Shandong Province
      • Jiaodong Peninsula (Jiaodong Gold Province)
        • Weihai Prefecture
          • Rongcheng Co.
    Geological Society of America Abstracts with Programs, Vol. 35, N°6, Sept. 2003, p. 634.
    • Xinjiang Autonomous Region
      • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
        • Tacheng Prefecture (Tarbaghatay Prefecture)
          • Junggar basin
    C. Lemanski, Jr. (re-entry lost Mindat data).
          • Tuoli Co. (Toli Co.)
            • Sartohay (Sartokay; Sartuohai; Saertuohai)
    Yushan Wang (1990): Journal of Mineralogy and Petrology 11(4), 66-74
    • Yunnan Province
      • Pu'er Prefecture
        • Mojiang Co.
    Yuan Li (1998): Geology and Prospecting 34(5), 28-32
    Cuba
     
    • Cienfuegos Province
    Economic Geology; December 1958; v. 53; no. 8; p. 966-1003
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Benešov (Beneschau)
    Kratochvíl, F.: Příspěvek k petrografii českého krystalinika. In Sborník geologického ústavu Československé republiky, 1947, sv. 14, s. 449-536.
      • Liberec Region
        • Jizerské Mtn (Iser Mtn)
    Lukas Jankaj specimen
    Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
      • Plzeň Region
        • Sušice (Schüttenhofen)
    [var: Chrompicotite] Svoboda J., Novotný J.: Chrompicotit z otavských písků. Časopis pro mineralogii a geologii, 1960, 5, 2, 117-119.
    • Moravia (Mähren; Maehren)
      • South Moravia Region
        • Oslavany
          • Mohelno
    Němec, F., 1937: Mineralogie, petrografie a geologie okolí Mohelna. Monografie hadce (monografie hadce). – In: Archiv Svazu pro ochranu přírody a domoviny v zemi Moravskslezské, Brno, 49-112.
    Egypt
     
    • Red Sea
    Eur. J. Mineral. , 1993, 5, pp. 1039-1056.
    France
     
    • Auvergne
      • Haute-Loire
        • Allègre
          • Fix-Saint-Geneys
            • Vernassal
    F.H. Forestier : "Les Péridotites Serpentinisées en France, Groupe I, Fascicule IV, Bassin du Haut Allier", BRGM, 1964
        • Auzon
          • Azérat
    Bull. Minéral. , 1987, 110, pp. 359-371.
    P.G. Pélisson : "Etude Minéralogique et Métallogénique du District Filonien Polytype de Paulhaguet (Haute-Loire, Massif Central Français)", Doctorate Thesis, Orléans, France, 1989
        • La Chaise-Dieu
          • Cistrières
    F.H Forestier "Les Péridotites Serpentinisées en France, Fascicule IV, Massif Central Médian : Bassin du Haut Allier", BRGM, 1964
    F.H Forestier "Les Péridotites Serpentinisées en France, Fascicule IV, Massif Central Médian : Bassin du Haut Allier", BRGM, 1964
        • Lavoûte-Chilhac
          • Saint-Cirgues
    Bull. Minéral. , 1987, 110, pp. 359-371.
          • Saint-Ilpize
    FORESTIER F. H., LASNIER B. (1969) – Découverte de niveaux d’amphibolites à pargasite, anorthite, corindon et saphirine dans les schistes cristallins de la vallée du Haut-Allier – Existence du faciès granulite dans la massif Central Français, Contr. Mineral. And Petrol. 23, pp. 194-235.
        • Lubilhac
    P.G. Pélisson : "Etude Minéralogique et Métallogénique du District Filonien Polytype de Paulhaguet (Haute-Loire, Massif Central Français)", Doctorate Thesis, Orléans, France, 1989 ; F.H. Forestier : "Les Péridotites Serpentinisées de France", Fascicule IV, BRGM, 1964
        • Paulhaguet
          • Salzuit
        • Torsiac
          • Lanau
    Bull. Minéral. , 1987, 110, pp. 359-371.
      • Puy-de-Dôme
        • Jumeaux
          • Champagnat-le-Jeune
    Bull. Minéral. , 1987, 110, pp. 359-371.
    • Corsica
      • Haute-Corse
        • Bastia
          • Canari
    H. Azais, J. Bouladon, P. Picot, P. Sainfeld : "Le Problème du Nickel dans les Serpentines de Corse", 1968, Bulletin du BRGM
          • Casamozza
          • Poggio-Mezzana
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
        • Corte
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
          • Cervione
          • Ghisoni
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
            • Matra
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
          • Piedicorte-di-Gaggio
    H. Azias et al. : "Le problème du nickel dans les serpentinites de Corse", Extrait du Bulletin du BRGM, N°1, 1968
          • Piedicroce
            • Prato-di-Giovellina
          • Sermano
    • Midi-Pyrénées
      • Ariège
        • Massat
          • Le Port
            • Col d'Agnès
              • Etang de Lherz
    J.L. Bodinier et al. , Bull. Minéral. , 1987, 110, pp. 345-358 / A.B. Woodland , Chemical Geology, 10 December 1996, vol. 134, no. 1, pp. 83-112(30) / J.P. Lorand, 1989, Lithos, 23, 281-299
        • Saint-Girons
          • Aulus-les-Bains
            • Col d'Agnès
              • La Freychinède
    J.L. Bodinier et al. , Bull. Minéral. , 1987, 110, pp. 345-358 / A.B. Woodland , Chemical Geology, 10 December 1996, vol. 134, no. 1, pp. 83-112(30) / J.P. Lorand, 1989, Lithos, 23, 281-299
    Germany
     
    • Baden-Württemberg
      • Kaiserstuhl
        • Sasbach
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Hesse
      • Hofgeismar
    S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Lower Saxony
      • Göttingen
        • Güntersen
    Wedepohl, K.H. (1954): Contributions to Mineralogy and Petrology 4, 217-232.
    • North Rhine-Westphalia
      • Siebengebirge
        • Bonn
    Moreva-Perekalina, T.V. (1985): Ultramafic xenoliths from alkaline basalts of Finkenberg (Siebengebirge, West Germany), Scripta geologica, Vol. 78, Rijksmuseum van Geologie en Mineralogie, Leiden
        • Wachtberg
          • Niederbachem
    Frechen, J., (1976): Siebengebirge am Rhein, Laacher Vulkangebiet, Maargebiet der Westeifel, Bornträger Berlin Stuttgart
    • Rhineland-Palatinate
      • Eifel
        • Daun
          • Brück-Dreis
    Brauns, R., Die Mineralien der Niederrheinischen Vulkangebiete, Schweizerbart, Stuttgart, 1922
      • Westerwald
        • Hundsangen
    Köster, H.M. (1960): Contributions to Mineralogy and Petrology 7, 71-75.
    • Saxony
      • Oberlausitz
        • Löbau
    Rose, G. (1868): Verhandlungen der deutschen geologischen Gesellschaft, Zeitschrift der deutschen geologischen Gesellschaft, Vol. 20, 230-233
    Hungary
     
    • Nógrád Co.
      • Karancs-Medves Mtns
        • Bárna
    C. Szabó et al. , Eur. J. Mineral. , 1996, 8, pp. 881-899.
        • Salgótarján
    EGU / EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #748 "Silicate melt inclusions in olivine phenocrysts from Hegyestu (Bakony-Balaton Highland) and Pecsko alkaline basalts (Nograd-Gomor), Hungary"
    • Veszprém Co.
      • Balaton Uplands
        • Zánka
    XVI ECROFI European Current Research On Fluid Inclusions, Porto 2001, Abstracts (Eds F. Noronha, A. Dória and A. Guedes), Faculdade de Ciências do Porto, Departamento de Geologia, Memória nº 7, pp. 237-240. Porto, 2001
    Indonesia
     
    • Kalimantan Island (Borneo Island)
      • Kalimantan Selatan Province (South Kalimantan Province)
        • Batulicin
    Lianshun Feng (1996): Geology and Prospecting 32(1), 22-26
    Italy
     
    • Liguria
      • Genova Province
        • Mezzanego
    Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia.
    • Piedmont
      • Torino Province
        • Casellette
    Sanero, E. (1932): Sopra alcune rocce del M. Musinè (Valle di Susa). Per. Mineral., 3, 87-123.
    • Sicily
      • Siracusa Province
        • Melilli
    S. Tonarini et al. , Eur. J. Mineral. , 1996, 8, pp. 1153-1173.
    • Tuscany
      • Florence Province
        • Montaione
          • Montignoso
    [var: Chrompicotite] Manasse E. (1922) - Sulla composizione chimica della cromopicotite di Montignoso presso Iano. - Rend. Lav. Uff. Invenz. Ric., 1.
    Japan
     
    • Chugoku Region
      • Shimane Prefecture
        • Oki Islands
          • Dohgo Island
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
    • Hokkaido
      • Hidaka Province
        • Samani-gun
          • Samani-cho
    M. Yamaguchi (1961) Mem. Fac. Sci., Kyushu University, Ser. D, Geology, 10, 2, 233-245.
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
          • Tsuyama City
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
        • Shimane Prefecture
          • Hamada City
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
    • Kyushu Region
      • Fukuoka Prefecture
        • Fukuoka City
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
      • Nansei Archipelago
        • Kagoshima Prefecture
          • Tokara Archipelago
    Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.
      • Oita prefecture
        • Saganoseki
    Katou, T. (1925) Journal of the Faculty of Science, Imperial University of Tokyo, 2: Geol., Min., Geog., Seism., Vol 1, part 2, 65-77.
    Katou, T. (1925) Journal of the Faculty of Science, Imperial University of Tokyo, 2: Geol., Min., Geog., Seism., Vol 1, part 2, 65-77.
      • Saga Prefecture
        • Karatsu City (Higashi-Matsuura-gun)
    Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
    Lesotho
     
    Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123.
    New Zealand
     
    • South Island
      • Nelson
    [var: Chrompicotite] Appendix to the 5th ed. of Dana's Mineralogy
      • Otago
        • Kakanui
    Mason, B. (1968): Contributions to Mineralogy and Petrology 19, 316-327.
    North Korea
     
    • Kangwon Province
      • Tongchon-gun
    Hideo Tsuda (1969) Supplement to "Minerals of Korea".
    Norway
     
    • Telemark
      • Nome
    Brøgger, W.C. (1921) Die Eruptivgesteine des Kristianiagebietes. IV. Das Fengebiet in Telemark, Norwegen. Skrifter udgit av Videnskabsselskabet i Kristiania. I. Math. Nat. Klasse. No.9, p. 1-408 (p. 286); Griffin (1973): Lherzolite nodules from the Fen complex, Norway. Contributions to Mineralogy and Petrology. 38, 135-146.
    Pacific Ocean
     
    • East Pacific Rise
    R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
    Poland
     
    • Mazowieckie
      • Warszawa
    Manecki, 2001. in Geological Quarterly Vol. 45-03 (Polish Geological Institute)
    Republic of Congo (Brazzaville)
     
    • Lékoumou Department
    Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, pp. 470-474.
    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.
    Russia
     
    • Eastern-Siberian Region
      • Sakha Republic (Saha Republic; Yakutia)
        • Daldyn-Alakit kimberlite field
          • Daldyn
    M. Kamenetsky et al. , Geophysical Research Abstracts, Vol. 5, 2003.
    Serbia
     
    • Raška District
      • Kopaonik
    [var: Chrompicotite] Milojkovic, Aleksandar (1977): Some specific characteristics of waste materials from asbestos production at the Korlace mine. Tehnika (Belgrade, Yugoslavia) 32(7-8), RGM 20-RGM 24.
    Slovakia
     
    • Banská Bystrica Region
      • Lučenec Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Poltár Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Košice Region
      • Košice Co.
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Rožňava Co.
        • Dobšiná (Dobschau; Topschau)
    [var: Chrompicotite] Pauliš P., Ďuďa R., 2002:Nejznámejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 136p
    Pauliš P., Ďuďa R., 2002:Nejznámejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 136p
    [var: Chrompicotite] Háber,M., Hovorka,D., 1981: Ore mineralisation on the contact of an alpine type ultramafic body (Dankova, SGR Mnts). Geol.Zbor. – Geol.Carpath., 91 – 113
    • Žilina Region
      • Liptovský Mikuláš Co.
        • Východná
    Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    South Africa
     
    • Free State Province
    Minerals of South Africa
    Spain
     
    • Andalusia
      • Málaga
        • Estepona
    Romero Silva, JC (2003). Minerales y Rocas de la provincia de Málaga. Edited by Cedma. Malaga County Council 318 pg. 1 map
        • Ronda Massif
    Romero Silva, JC (2003). Minerales y Rocas de la provincia de Málaga. Edited by Cedma. Malaga County Council 318 pg. 1 map
    • Autonomous City of Ceuta
    J. Kornprobst: "Petrographical study of "acoustic basement" and associated breccia at site 121 - Western Alboran basin: a comparison with the Betico-Rifean basement." Deep Sea Drilling Project Initial Reports, volume 13.
    • Castile-La Mancha
      • Albacete
        • Hellín
          • Cancarix
    E. Salvioli-mariani et al. , Eur. J. Mineral. , 1996, 8, pp. 1027-1039.
    • Murcia
      • Jumilla
        • La Celia
    E. Salvioli-mariani et al. , Eur. J. Mineral. , 1996, 8, pp. 1027-1039.
    Sweden
     
    • Hälsingland
      • Ljusdal
        • Los
    No reference listed
    • Lappland
      • Arjeplog
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Albula Valley
        • Landwasser Valley
          • Davos
            • Wolfgang
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 382.
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 170.
    Taiwan
     
    • Taiwan Province
      • Hualien Co.
    Zhengzhang Tao (1992): Journal of Mineralogy and Petrology 13(4), 21-27
    Tanzania
     
    • Kilimanjaro Region
      • Lashaine volcano
    Journal of Petrology, September 2002, vol. 43, no. 9, pp. 1749-1777(29)
    C.T. Lee et al. , Contrib. Mineral. Petrol. , 2000, 139, pp. 470-484.
    UK
     
    • England
      • Derbyshire
        • Blackwell-in-the-Peak
    Ford, T., A. Sarjeant & M. Smith (1993): The minerals of the Peak district of Derbyshire. UK Jour. Mines & Minerals 13, 16-55.
    USA
     
    • Alaska
      • Yukon-Koyukuk Borough
        • Hot Springs District
    U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
    • California
      • Lassen Co.
        • Cascade Range
          • Lassen Volcanic National Park
    Diller, J.S. (1891), A late volcanic eruption in northern California and its peculiar lava: USGS Bulletin 79: 23; Finch, R.H. & C.A. Anderson (1930), The quartz-basalt eruptions of Cinder Cone, Lassen Volcanic National Park, California: University of California, Department of Geological Sciences Bulletin: 19: 245-273; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 345.
      • Placer Co.
    Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp.: 309; Schrader, Frank Charles, R.W. Stone & Samuel Sanford (1917), Useful minerals of the United States: 75; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 345.
      • San Luis Obispo Co.
        • Santa Lucia Mts (Santa Lucia Range)
          • Cerro Alto
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
      • Santa Barbara Co.
    Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 346.
      • Siskiyou Co.
        • Cascade Range
    Wadsworth, M.E. (1882), On picotite from Mt. Shasta, California. Boston Society of Natural History Proceedings: 21: 314-315; Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp.: 309; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 346; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 148.
      • Yolo Co.
        • Coast Ranges
          • Knoxville District
            • Knoxville area
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • Georgia
      • Towns Co.
        • Youngstown
    Minerals of Georgia: Their properties and occurrences. Robert Cook GGWRD Bull 92
      • Troup Co.
    Van Gosen, Bradley S. (2005) Reported historic asbestos mines, historic asbestos prospects, and natural asbestos occurrences in the eastern United States. USGS Open-File Report 2005-1189.
    • Idaho
      • Idaho Co.
        • Maggie Creek District
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • Maine
      • Oxford Co.
    Anderson, 1991. Maine Mineral Localities, 2nd ed.
    • Montana
      • Stillwater Co.
        • Stillwater Complex
    Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
    • New York
      • Tompkins Co.
    Jensen (1978) Minerals of New York State,p.163
    • Virginia
    Minerals of Virginia 1990 by R. V. Dietrich
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