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Prase

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About PraseHide

Formula:
SiO2
Name:
From the Greek praso = leek.
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 truly be called a varietal name any longer - since it covers more than one material.

* However, the original German definition of "Prasem" is that of a quartz, in crystals or massive, which is coloured leek-green by acicular inclusions of "Strahlstein" (= actinolite ) (Gürich, 1900; Klockmann, 1912).

Compare also plasma.

Visit gemdat.org for gemological information about Prase.


Pronounciation of PraseHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Chemical Properties of PraseHide

Formula:
SiO2

Synonyms of PraseHide

Varieties of PraseHide

Prase-malachiteA term for Prase enclosing Malachite.

Common AssociatesHide

Associated Minerals Based on Photo Data:
42 photos of Prase associated with HematiteFe2O3
24 photos of Prase associated with HedenbergiteCaFe2+Si2O6
17 photos of Prase associated with AmethystSiO2
14 photos of Prase associated with Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
13 photos of Prase associated with CalciteCaCO3
12 photos of Prase associated with AndraditeCa3Fe3+2(SiO4)3
12 photos of Prase associated with Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
12 photos of Prase associated with Iron RoseFe2O3
11 photos of Prase associated with SideriteFeCO3
10 photos of Prase associated with QuartzSiO2

Other InformationHide

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 PraseHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gürich, G. (1900): Das Mineralreich. ["Prasem ist z.B. ein Quarz, der durch überaus dicht eingestreute kleine Hornblendenädelchen völlig grün erscheint. Glasglanz und muschliger Bruch lassen ihn von dem lauchgrünen Plasma, dem Chrysopal, dem apfelgrünen Chrysopras, und der Glanz von dem grünen Jaspis unterscheiden; ... Der bekannteste Fundort für Prasem ist Breitenbrunn."]
Klockmann, F. (1912): Lehrbuch der Mineralogie. ["Prasem, in XX oder derb, lauchgrün, weil innig mit Strahlstein durchzogen. Breitenbrunn in Sachsen."]
"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.
Klemme, S. et al. (2018): On the color and genesis of prase (green quartz) and amethyst from the Island of Serifos, Cyclades, Greece. Minerals 8, 487.

Internet Links for PraseHide

Localities for PraseHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • 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. Australian Journal of Mineralogy 12, 9-23.
Austria
 
  • Carinthia
    • Spittal an der Drau District
      • Mallnitz
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
R. Hasler Collection
  • Salzburg
    • St. Johann im Pongau District
      • Bad Gastein
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
  • Tyrol
    • Lienz District
      • Virgen valley
        • Prägraten am Großvenediger
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Schwaz District
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Bulgaria
 
  • Burgas Province
    • Pomorie
Marcus Voigt Collection
China
 
  • Guizhou
    • Qianxinan
      • Qinglong County
        • 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
    • Chifeng City (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
Ecuador
 
  • Guayas Province
    • Guayaquil Canton
      • Guayaquil
        • Pascuales
          • La Germania
Alejandro Félix Gutiérrez
France
 
  • Auvergne-Rhône-Alpes
    • Haute-Loire
      • Monistrol-sur-Loire
        • Saint-Ferreol-d'Auroure
BRGM (1980) - Fiche BSS 07684X4001/GT
  • Brittany
    • Finistère
Lacroix, A. (1910): Minéralogie de la France et de ses colonies, Librairie Polytechnique, Ch. Béranger Editeur, Tome III, 67.
  • Occitanie
    • Pyrénées-Orientales
      • Prats-de-Mollo-la Preste (Prats de Molló-la Presta)
Companyo, L. (1861): Histoire naturelle des Pyrénées-Orientales, Imprimerie de J.-B. Alzine, Tome I, 346.
  • Pays de la Loire
    • Loire-Atlantique
      • Couffé
Baret, Ch. (1905): Catalogue de la Collection de Minéralogie de la Loire-Inférieure, Muséum de Nantes, 89.
      • Oudon
Baret, Ch. (1905): Catalogue de la Collection de Minéralogie de la Loire-Inférieure, Muséum de Nantes, 89.
Baret, Ch. (1905): Catalogue de la Collection de Minéralogie de la Loire-Inférieure, Muséum de Nantes, 89.
Germany
 
  • Bavaria
    • Upper Franconia
      • Bayreuth
        • Bad Berneck
F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt und Druckerei GmbH (Hof), 1984
  • Brandenburg
    • Oberspreewald-Lausitz
      • Großräschen
        • Saalhausen
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
      • Lübbenau
        • Calau
          • Plieskendorf
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
  • Hesse
    • Darmstadt
      • Bergstraße
        • Bensheim
          • Hochstädten
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony
    • Erzgebirgskreis
      • Breitenbrunn
        • Breitenbrunn
Wittern: "Mineralfundorte in Deutschland", 2001
      • Grünhain-Beierfeld
        • Beierfeld
Wittern: "Mineralfundorte in Deutschland", 2001
    • Vogtlandkreis
      • Reichenbach
        • Neumark
J. Müller, Werdau, Saxony
Greece
 
  • East Macedonia and Thrace
    • Drama
      • Kato Nevrokopi basin
        • Kato Vrontou
Christos Spiromitros Collection
  • South Aegean
    • Milos
Hyrsl, J.; Niedermayr, G. (2003); Magic Worlds - Inclusion in Quartz - Geheimnisvolle Welt - Einschlüsse im Quarz ; Frenzel, A. (1895): Mineralogisches. Tschermaks Mineralogische und Petrographische Mitteilungen 14, 121-130 (in German).
        • Avissalos (Avyssalos; Avessalos; Aghriomelisa Mountain)
Fritz Schreiber collection and field observations; Klemme, S. et al. (2018): On the color and genesis of prase (green quartz) and amethyst from the Island of Serifos, Cyclades, Greece. Minerals 8, 487.; Voudouris, P., Mavrogonatos, C., Graham, I., Giuliani, G., Tarantola, A., Melfos, V., ... & Magganas, A. (2019) Gemstones of Greece: Geology and Crystallizing Environments. Minerals, 9(8), 461.
Christos Spiromitros specimens
L. Rantos collection
Klemme, S., Berndt, J., Mavrogonatos, C., Flemetakis, S., Baziotis, I., Voudouris, P., Xydous, S. (2018) On the Color and Genesis of Prase (Green Quartz) and Amethyst from the Island of Serifos, Cyclades, Greece. Minerals, 8, 487.
Ireland
 
  • Leinster
    • Co. Wicklow
      • Croghan Kinshela Mountain
Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 627-634
Italy
 
  • Piedmont
    • Metropolitan City of Turin
      • Léssolo
        • Cálea
Campostrini, I. (2001): Le miniere di Brosso. Monografie XXIX Museo Regionale di Scienze Naturali - Torino, 185 pp.
  • Trentino-Alto Adige
    • South Tirol
      • Sarentine Alps (Sarntal Alps)
Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
    • Trento Province (Trentino)
      • 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
Garavelli C.L. & Vurro F. (1984) Gyrolite from Ortano (Island of Elba), Rendiconti Della Societa Italiana Di Mineralogia E Petrologia, Vol. 39, pp 695--704
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
Morocco
 
  • Drâa-Tafilalet Region
    • Er Rachidia Province
A.M.I. Martins collection
Nepal
 
  • Province No. 3
    • Dhading District
António Manuel Ináçio Martins
Russia
 
  • Primorsky Krai
[John Betts; Rob Lavinsky]; Dmitriy I. Belakovskiy (2003): New Data on Minerals: 38: 101-112.
Spain
 
  • 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
    • Sierra de Cartagena
      • La Unión
        • Sancti Spiritu
FMF Forum
UK
 
  • England
    • Cornwall
      • 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
        • 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
USA
 
  • 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 Mining 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
  • Texas
    • Parker Co.
Ransom, Jay Ellis (1974 ) Gems and Minerals of America :pg 547
  • Utah
    • Beaver Co.
      • Mineral Mts (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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