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Iron deposit, Bourbach-le-Bas, Thann, Thur Valley (Thann Valley), Haut-Rhin, Alsace, France

(Gisement ferrifère, Bourbach-le-Bas, Thann, Vallée de la Thur (Vallée de Thann), Haut-Rhin, Alsace, France)

Iron-bearing veins, hosted by volcano-sedimentary rocks of the Thann series (upper Visé), trending in northeastern directions and dipping at 20° to the southeast. Their widths vary from several centimeters to more than five meters. They were worked from four districts, named "Bildstoeckle", "Georgenwald", "Knapphütte" and "Krast". It is not known when the mines were started, but they were certainly already active in the 18th century.

Ref.:
- J.-L. Hohl: "Minéraux et Mines du Massif Vosgien", Editions du Rhin (Mulhouse), 1994





Mineral List:
  • Ankerite
    Ca(Fe
    2+
     
    ,Mg,Mn
    2+
     
    )(CO
     
    3
    )
     
    2
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Baryte
    BaSO
     
    4
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Calcite
    CaCO
     
    3
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Goethite
    α-Fe
    3+
     
    O(OH)
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Hematite
    Fe
     
    2
    O
     
    3
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Lepidocrocite
    γ-Fe
    3+
     
    O(OH)
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Limonite
    FeO(OH)·nH
     
    2
    O
    Reference: [J.-L. Hohl: "Minéraux et Mines du Massif Vosgien", Editions du Rhin (Mulhouse), 1994]
  • Quartz
    SiO
     
    2
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Quartz
    var: Jasper
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]
  • Siderite
    FeCO
     
    3
    Reference: [Wittern, Journée: "Mineralien finden in den Vogesen", 1997]


    10 entries listed. 8 valid minerals.

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