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Manganese deposit, Romanèche-Thorens, Saône-et-Loire, Burgundy, France

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Located about 5 km NE of Beaujeu and 10 km SW of Mâcon.

Veins and stratiform deposits in liassic sediments.

Production : 400,000 tons MnO2.



References:
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954.

Bariand, P., F. Cesbron and J. Geffroy (1977), "Les minéraux, leurs gisements, leurs associations," Editions Minéraux et Fossiles.





Mineral List:
  		•  Arseniosiderite (TL)
    Ca
     
    2
    		Fe
    3+
    3
    		[O
     
    2
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    Type Locality: Manganese deposit, Romanèche-Thorens, Saône-et-Loire, Burgundy, France
    Habit: Aggregates of fibrous crystals.
    Colour: Brown
    Fluorescence: None
    Description: Forms thick crusts of parallel-fiber to radial-fibrous masses
    Reference: [Annal. Mines (1842): 4th. series: 2: 343; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954.]
    Site Photo
    Manganese deposit, Romanèche-Thorens, Saône-et-Loire, Burgundy, France
    © Peter Haas
  		•  Baryte
    BaSO
     
    4
    Description: Late stage colorless to blue barite crystals.
    Reference: [Aufschluss 1974(3), 193-197]
  		•  Calcite
    CaCO
     
    3
    Reference: ["Les minéraux, leurs gisements, leurs associations", P. Bariand, F. Cesbron et J. Geffroy (1977), Editions Minéraux et Fossiles,]
  		•  Fluorite
    CaF
     
    2
    Reference: [Aufschluss 1974(3), 193-197]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954.]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [P Haas collection]
  		•  'Psilomelane'
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954.]
  		•  Quartz
    SiO
     
    2
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954; Bariand, P., F. Cesbron and J. Geffroy (1977), "Les minéraux, leurs gisements, leurs associations," Editions Minéraux et Fossiles.]
  		•  Romanèchite (TL)
    (Ba,H
     
    2
    		O)
     
    2
    		Mn
     
    5
    		O
     
    10
    Type Locality: Manganese deposit, Romanèche-Thorens, Saône-et-Loire, Burgundy, France
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 954; Lapis (1989): 1: 6.]
    Site Photo
    Manganese deposit, Romanèche-Thorens, Saône-et-Loire, Burgundy, France
    © jm.CLAUDE


    9 entries listed. 8 valid minerals. 2 type localities (valid minerals).

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