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Gwindel

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Name:From German "Gwindel", meaning "gewunden" = contorted, twisted, wound.
A variety of Quartz

Quartz crystals that grew along and are slightly rotated around a single a-axis. This results in twisted and tabular crystals.
Found in some alpine-type fissures.

Note: Gwindel-type intergrowths are also known for other minerals.


Classification of Gwindel

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Other Names for Gwindel

Synonyms:
GwindleTwisted Quartz
Other Languages:
French:Peigne
Quartz Helicoidal
Sucre
German:Gwindl

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 Gwindel

Reference List:

- +
Žorž, M. (1994): Pyroelectrically caused twisting of quartz crystals. In Geologija, 35th book, 183-206.

Moore, T. P. (2007): Alpine quartz gwindels. Mineralogical Record, 38, 103-121.

Žorž, M. (2009): Quarz-Gwindel. Mineralien-Welt 20 (3), 30-46.


http://www.quartzpage.de/gwindel.html

http://www.articlearchives.com/science-technology/earth-atmospheric-science/1541521-1.html

Internet Links for Gwindel

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  • Localities for Gwindel

    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.
    France
     
    • Rhône-Alpes
      • Haute-Savoie
        • Chamonix
          • Mont Blanc Massif (Monte Bianco Massif)
    Hède frédéric
    Van King
    Hède frédéric
    Namibia
     
    • Hardap Region
      • Rehoboth District
    Niedermayr, G. & Schnaitmann, E. A. (2010): Neuigkeiten aus Namiba. Mineralien-Welt 21 (6), 89-96.
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Vorderrhein Valley
        • Tujetsch (Tavetsch)
          • Curnera Valley
    Yaiba Sakaguchi
    • Wallis (Valais)
      • Le Trient Valley
    Frederic Hede
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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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