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"Herkimer-style" Quartz

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Name:
After 'herkimer diamond', the misleading name for quartz from the Herkimer region of New York State, USA.
A variety of Quartz

This is a collective name to group together the many different local names for transparent, lustrous quartz crystals, usually doubly-terminated, often associated with inclusions of petroleum and/or associated with oil or coal deposits within sedimentary rocks. All such quartz crystals formed under low-temperature hydrothermal conditions in the sedimentary rocks.
Rarely, these quartzes form also as sceptres.

The misleading name Herkimer Diamond has been used locally in the Herkimer region of New York State, USA to describe such crystals since the early 20th century and possibly longer.

Apart from the confusion that these are actually quartz rather than diamond there has been growing confusion and arguments in more recent times as the name 'Herkimer diamond' is increasingly associated with other similar quartz crystals from other regions, including those from Hungary, France, Italy, Canada, Pakistan, China and others.

Classification of "Herkimer-style" Quartz

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http://www.mindat.org/min-1877.html
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Other Names for "Herkimer-style" Quartz

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 "Herkimer-style" Quartz

Reference List:
Ulrich, W. (1989): The Quartz Crystals of Herkimer County. Rocks & Minerals, 64 (2), 108-122.

Rykart, R. (1995) Quarz-Monographie - Die Eigenheiten von Bergkristall, Rauchquarz, Amethyst, Chalcedon, Achat, Opal und anderen Varietäten. Ott-Verlag, Thun (in German).

Russ, K.-H. (1995): Die Quarzkristalle von Herkimer / New York. Der Aufschluss, 46 (5), 229-232 (in German).

Russ, K. H. (1997): Historie, Geologie und Mineralogie der Quarz-Kristalle von Herkimer, New York. Mineralien-Welt 8 (6), 61-71 (in German).

Castagliola, P., Cipriani, V., Pratesi, G. & Niedermayr, G. (2006): Die 'Quarz-Diamanten' aus dem Apennin in Italien (Toskana und Emilia Romagna). Mineralien-Welt, 17(2), 58-66 (in German).

http://sec.kingston.ac.uk/research/research-centres/centre-for-earth-and-environmental-science/projects/herkimer/
https://www.mineralienatlas.de/lexikon/index.php/Herkimer%20Diamanten

Internet Links for "Herkimer-style" Quartz

Localities for "Herkimer-style" Quartz

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.
Argentina
 
  • Neuquén
    • Chos Malal department
      • Chos Malal
Dr Jorge Dascal specimens
Austria
 
  • Tyrol
    • North Tyrol
      • Inn valley
        • Innsbruck
          • Zirl
Strasser, M. (2007): "Herkimer Quarze" aus der Ehnbachklamm in Zirl, Tirol. Lapis, 32 (5), 23-24 (Bemerkenswerter Eigenfund).
Canada
 
  • Ontario
    • Carleton Co.
      • Osgoode Township
Michael Bainbridge Collection
  • Québec
    • Capitale-Nationale
      • Quebec City (Agglomération de Québec)
Horváth (2003) Mineral species discovered in Canada and species named after Canadians. Canadian Mineralogist SP6.
Italy
 
  • Lombardy
    • Bergamo Province
      • Seriana Valley
Alessio Becucci, Simone Boscolo, ad Alessandro Tagliaferri collections.
Japan
 
  • Shikoku Island
    • Kochi Prefecture
      • Takaoka-gun
Alfredo Petrov specimens
Pakistan
 
  • Balochistan (Baluchistan)
Updated due to mindat nomenclature changes on 'herkimer-style' quartz
South Africa
 
  • Northern Cape Province
    • Namakwa District (Namaqualand)
      • Okiep Copper District
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa. Struik Nature Publishers, Cape Town, South Africa.
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa. Struik Nature Publishers, Cape Town, South Africa.
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa. Struik Nature Publishers, Cape Town, South Africa.
Spain
 
  • Asturias
    • Caravia mining area
      • Colunga District
        • Obdulia vein
          • Loroñe
Calvo, M. (2016). Minerales y Minas de España. Vol VIII.Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399 págs
    • Ribadesella
      • Berbes Mining area
Calvo, M. (2016). Minerales y Minas de España. Vol VIII.Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399 págs
  • Basque Country
    • Álava
      • Legutiano (Villarreal de Álava)
Calvo, M. (2016). Minerales y Minas de España. Vol VIII.Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399 págs
    • Vizcaya
      • Abanto y Ciervana (Abanto Zierbena)
Calvo, M. (2016). Minerales y Minas de España. Vol VIII.Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399 págs.
  • La Rioja
Calvo, M. (2016). Minerales y Minas de España. Vol VIII.Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 399 págs.
UK
 
  • England
    • Derbyshire
      • Buxton
Starkey, R., and Faithfull, J. (2015) The history and occurrence of 'Buxton Diamonds'. Journal of the Russell Society, 18, pp. 24-45.
  • Wales
    • Caerphilly
      • Markham
J.Ralph, collected 1995
USA
 
  • New York
    • Fulton Co.
      • Town of Ephratah
        • Lassellsville
Rocks & Minerals (1970) 45:581-582
James Dwight Dana (1896) Manual of Mineralogy and Petrography:
      • Little Falls
J.Ralph 2016
[www.johnbetts-fineminerals.com]; Rocks & Minerals 82:472-483
      • Town of Danube
http://crystalmountaingems.com
      • Town of Newport
[www.johnbetts-fineminerals.com]
Rocks & Minerals 82:472-483
http://www.roadsideamerica.com/attract/NYMIDdiamond.html; Rocks & Minerals 82:472-483
New York State Museum Institute specimen
    • Montgomery Co.
      • Mohawk Township
        • Fonda
[www.johnbetts-fineminerals.com]; Rocks & Minerals 82:472-483
Rocks & Minerals 56:153-156
      • Palatine
P Cristofono collection, 2007
The New York State Museum Catalog No. 210.117
      • St Johnsville
[www.johnbetts-fineminerals.com]
    • Warren Co.
New York State Museum (Albany), # NYSM 22367 (originally from Philadelphia Academy of Sciences).
Mineral and/or Locality  
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