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Les Côtes (Les Cottes), Saint-Cirgues, Lavoûte-Chilhac, Haute-Loire, Auvergne, France

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600 meters SW from St Cirgues, 80 meters above left bank of Fougères brook, 600 meters upstream confluence of Fougères and Avesne brooks.
Three grey quartz/berthierite/stibnite veins in mylonitized gneisses (leptyno-amphibolic group).
A tan/auburn microsaccharoid quartz with rutile, marmatite and pyrite brecciates leptynites.
Amphibolites are mineralized with rutile, ilmenite, chalcopyrite, sphalerite, pyrite, pyrrhotite, smythite and arsenopyrite.




Group 2 - Sulphides and Sulfosalts
  		• Arsenopyrite2.EB.20
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
  		• Berthierite2.HA.20
    FeSb
     
    2
    		S
     
    4
  		• Chalcopyrite2.CB.10a
    CuFeS
     
    2
  		• Marcasite2.EB.10a
    FeS
     
    2
  		• Pyrite2.EB.05a
    FeS
     
    2
  		• Pyrrhotite2.CC.10
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
  		• Smythite2.CC.10
    (Fe,Ni)
     
    9
    		S
     
    11
  		• Sphalerite2.CB.05a
    (Zn,Fe
    2+
     
    		)S
      var: Marmatite2.CB.05a
    (Zn,Fe)S
  		• Stibnite2.DB.05
    Sb
     
    2
    		S
     
    3
    Group 4 - Oxides and Hydroxides
  		• Goethite4.FD.10
    α-Fe
    3+
     
    		O(OH)
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
  		• Quartz4.DA.05
    SiO
     
    2
  		• Rutile4.DB.05
    TiO
     
    2
    Unclassified Minerals
  		• 'Amphibole Group'-


    15 entries listed. 14 valid minerals.

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