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A variety of Quartz

Originally, the varietal name "prase" was applied to a dull leek-green colored quartzite (a rock, not a mineral); but over the years it has been also applied to other materials, particularly a green colored jasper of similar color. For perhaps more than a century it was restricted to granular micro-crystalline varieties of quartz and the original quartzite; but in recent years euhedral crystals of quartz having a similar leek-green color have had the term applied to them as well, expanding the definition beyond micro-crystalline forms. Now it is simply a color descriptor for quartz: If it is leek-green, it is called "prase" - whether it is micro- or macro-crystalline, and no matter what causes the color. Basically, the term no longer has any scientific rigor - it has become a general term; it can't even truely be called a varietal name any longer - since it covers more than one material.

Compare also plasma.

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Classification of Prase

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Other Names for Prase

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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.

References for Prase

Reference List:

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"Manual of Mineralogy after J. D. Dana", by Klein, Cornelis, and Hurlbut, Jr., Cornelius, 20th Edition, 1985, John Wiley & Sons, publisher, New York, Chichester, Brisbane, Toronot, Singapore: pg. 442.

"Standard Catalog of Gem Values," 2nd Edition, by Miller, Anna and Sinkankas, John, Geoscience Press, Tucson, Arizona, USA, pg. 85.

"Dana's System of Mineralogy - Volume III Silica Minerals" 7th edition, by Clifford Frondel, John Wiley and Sons, New York and London. 1962 pg. 219.

Internet Links for Prase

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  • Buy from McDougall Minerals
  • Fabre Minerals - search for Prase specimens
  • Specimens:The following Prase specimens are currently listed for sale on minfind.com.

    Localities for Prase

    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.
    • New South Wales
      • Parry Co.
        • Nundle
    • Western Australia
      • Coolgardie Shire
        • Spargoville
      • Menzies Shire
        • Comet Vale
    Grguric, B. A., Pring, A., Bevan, A. W. R. and Downes, P. J. (2006): The minerals of Comet Vale, Western Australia. Austral. J. Mineral. 12, 9-23.
    • Carinthia
      • Hohe Tauern
        • Ankogel group
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    R. Hasler Collection
    • Salzburg
      • Hohe Tauern
        • Gastein valley
          • Anlauf valley
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Tyrol
      • East Tyrol
        • Virgen valley
          • Prägraten
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
      • North Tyrol
        • Sellrain valley
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Guizhou Province
      • Qianxi'nan Autonomous Prefecture
        • Qinglong Co.
          • Dachang Sb ore field
    Baiwu Hao (2010): Geology and Exploration 46(4), 741-750
    Yu Chen, Xiucheng Liu, and Qihou Zhang (1984): Mineral Deposits 3(3), 1-12; Yong Xia, Qihou Zhang, and Huabin Huang (1993): Geology and Prospecting 29(10), 48-53
    • Inner Mongolia Autonomous Region
      • Ulanhad League (Chifeng Prefecture)
        • Hexigten Banner (Keshiketeng Co.)
          • Huanggang Fe-Sn deposit (Huanggangliang Mine; Huanggang Mine)
    Ottens, B. and G. Neumeier (2012) The Huanggang Mine, Inner Mongolia, China. Mineralogical Record 43:529-563
    • Guayas Province
      • Guayaquil Canton
        • Guayaquil
          • Pascuales
            • La Germania
    Alejandro Félix Gutiérrez
    • Auvergne
      • Haute-Loire
        • Monistrol-sur-Loire
          • Saint-Ferreol-d'Auroure
    BRGM (1980) - Fiche BSS 07684X4001/GT
    • Bavaria
      • Franconia
        • Franconian Forest
          • Bad Berneck
    F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt und Druckerei GmbH (Hof), 1984
    • Brandenburg
      • Großräschen
        • Saalhausen
    A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
      • Lübbenau
        • Calau
          • Plieskendorf
    A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
    • Hesse
      • Odenwald
        • Bensheim
          • Hochstädten
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Saxony
      • Erzgebirge
        • Breitenbrunn District
          • Breitenbrunn
    Wittern: "Mineralfundorte in Deutschland", 2001
        • Schwarzenberg District
          • Beierfeld
    Wittern: "Mineralfundorte in Deutschland", 2001
      • Vogtland
        • Reichenbach
          • Neumark
    J. Müller, Werdau, Saxony
    • Aegean Islands Department (Aiyaíon)
      • Kykládes Prefecture
        • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
    Hyrsl, J.; Niedermayr, G. (2003); Magic Worlds - Inclusion in Quartz - Geheimnisvolle Welt - Einschlüsse im Quarz
            • Avissalos (Avyssalos; Avessalos; Aghriomelisa Mountain)
    Fritz Schreiber collection and field observations
    Christos Spiromitros specimens
    L. Rantos collection
    • Macedonia Department
      • Dráma Prefecture
        • Kato Nevrokopi basin
          • Kato Vrontou
    Christos Spiromitros Collection
    • Co. Wicklow
      • Croghan Kinshela Mountain
    Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 627-634
    • Piedmont
      • Torino Province
        • Canavese District
          • Léssolo
            • Cálea
    Campostrini, I. (2001): Le miniere di Brosso. Monografie XXIX Museo Regionale di Scienze Naturali - Torino, 185 pp.
    • Trentino-Alto Adige
      • Bolzano Province (South Tyrol)
        • Sarentine Alps (Sarntal Alps)
    Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
      • Trento Province
        • Fassa Valley
          • Buffaure Group
    De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
    • Tuscany
      • Livorno Province
        • Elba Island
          • Capoliveri
            • Cape Calamita Mine (Calamita Mine)
    no ref. in literature
          • Rio Marina
    Ref. Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo.
            • Rio Mine (Rio Marina Mine)
    L. Rossato, M. Benvenuti, 2002 - Guida al sentiero geo-mineralogico attraverso la Miniera di Rio Marina - Regione Toscana, Firenze
    De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol
    • Meknès-Tafilalet Region
      • Er Rachidia Province (Errachidia Province)
    A.M.I. Martins collection
    • Bagmati Zone
      • Dhading District
    António Manuel Ináçio Martins
    • Far-Eastern Region
      • Primorskiy Kray
        • Kavalerovo Mining District
    [John Betts; Rob Lavinsky]; Dmitriy I. Belakovskiy (2003): New Data on Minerals: 38: 101-112.
    • Basque Country
      • Álava
        • Zuia
          • Lukiano
    Personally collected by Roberto Galcerán
    • Catalonia
      • Girona (Gerona)
        • Ripollès
          • Molló
            • Espinavell (Espinabell)
              • Costabona Mtn
    Mata i Perelló, J.M. (1990). Els minerals de Catalunya. Institut d´Estudis Catalans
    • Murcia
      • La Unión
        • Sierra Minera de Cartagena-La Unión
          • Sancti Spiritu
    FMF Forum
    • England
      • Cornwall
        • Camborne - Redruth - St Day District
          • Camborne
            • North Roskear
    Hall, T.M. (1868): Edward Stanford (London), 168 pp., Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
        • St Just District
          • St Just
            • Cot Valley
    Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 190
    • California
    Pelletier, 1962. Mineral Species & Localities of Marin County
      • Napa Co.
        • Knoxville area
    Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
    • Colorado
      • Costilla Co.
    Mineralogy of Michigan (E. W. Heinrich & G. W. Robinson)
    • Massachusetts
      • Essex Co.
    William Prescott (1852) Journal of the Essex County Natural History Society: containing various Communications to the Society pp 78-91
    • New York
      • New York City
    Kunz, 1892. Gems & Precious Stones of N. America, p. 120.
    • North Carolina
      • Macon Co.
    Pratt,Joseph Hyde.,(1933) Gems and Gem Minerals of North Carolina; American Mineralogist,Vol.18,No.4,April,1933
    • Pennsylvania
      • Chester Co.
        • Newlin Township
          • Unionville
    Gordon, S.G. (1922) The Mineralogy of Pennsylvania. 255 pp., Philadelphia.
      • Lancaster Co.
        • State Line Chromite District
          • Fulton Township
    Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania
    Collected April of 2012- David S. Bernstein
    • Rhode Island
      • Providence Co.
    AmMin 11:334-340
    Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
    • Utah
      • Beaver Co.
        • Mineral Range
    UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Virginia
    Minerals of Virginia 1990 by R. V. Dietrich
        • Leesburg
    Dana 6: 1072.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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