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Listvenite outcrop, Lanau, Torsiac, Haute-Loire, Auvergne, France

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Ref.: F.H. Forestier : "Les Péridotites Serpentinisées en France, Groupe I, Fascicule IV, Bassin du Haut Allier", BRGM, 1964; Bull. Minéral., 1987, 110, pp. 359-371.

Localization : Along RN 9 road, between Lempdes and Massiac, in a road curve under Léotoing castle ruins.
Amphibolite, serpentinite and listvenite lenses, with reaction aureoles in sericitized biotite-sillimanite-cordierite anatexite.
Plagioclasite exsudations at the contact amphibolite/anatexite.




Group 1 - Elements
  		• Awaruite1.AE.20
    Ni
     
    3
    		Fe
    Group 2 - Sulphides and Sulfosalts
  		• Arsenopyrite2.EB.20
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
  		• Heazlewoodite2.BB.05
    Ni
     
    3
    		S
     
    2
  		• Marcasite2.EB.10a
    FeS
     
    2
  		• Millerite2.CC.20
    NiS
  		• Pyrite2.EB.05a
    FeS
     
    2
  		• Pyrrhotite2.CC.10
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Group 4 - Oxides and Hydroxides
  		• Hematite4.CB.05
    Fe
     
    2
    		O
     
    3
  		• Hercynite
    var: Picotite    		4.BB.05
    (Fe,Mg)(Al,Cr)
     
    2
    		O
     
    4
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
  		• Quartz4.DA.05
    SiO
     
    2
  		• Spinel4.BB.05
    MgAl
     
    2
    		O
     
    4
    Group 5 - Nitrates and Carbonates
  		• Ankerite5.AB.10
    Ca(Fe
    2+
     
    		 ,Mg,Mn
    2+
     
    		)(CO
     
    3
    		)
     
    2
  		• Calcite5.AB.05
    CaCO
     
    3
  		• Dolomite5.AB.10
    CaMg(CO
     
    3
    		)
     
    2
  		• Magnesite
    var: Ferroan Magnesite    		5.AB.05
    (Mg,Fe)CO
     
    3
    Group 9 - Silicates
  		• Albite9.FA.35
    Na[AlSi
     
    3
    		O
     
    8
    		]
      var: Oligoclase9.FA.35
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
  		• Almandine9.AD.25
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
  		• Anorthite
    var: Labradorite    		9.FA.35
    (Ca,Na)[Al(Al,Si)Si
     
    2
    		O
     
    8
    		]
  		• Anthophyllite9.DE.05
    ☐[Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
  		• Antigorite9.ED.15
    (Mg,Fe
    2+
     
    		)
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
  		• Biotite9..
  		• Chrysotile9.ED.15
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
  		• Clinochlore9.EC.55
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
      var: Chromian Clinochlore9.EC.55
    Mg
     
    5
    		(Al,Cr)
     
    2
    		Si
     
    3
    		O
     
    10
    		(OH)
     
    8
      var: Pennine9.EC.55
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Diopside9.DA.15
    CaMg[Si
     
    2
    		O
     
    6
    		]
  		• Enstatite9.DA.05
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
      var: Bronzite9.DA.05
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    3
    		]
     
    2
  		• Forsterite9.AC.05
    Mg
     
    2
    		[SiO
     
    4
    		]
  		• Gedrite9.DD.05
    ☐[Mg
     
    2
    		][Mg
     
    3
    		Al
     
    2
    		][(OH)
     
    2
    		|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
  		• Hydrobiotite9.EC.60
  		• Kulkeite9.EC.60
    Mg
     
    8
    		Al(AlSi
     
    7
    		)O
     
    20
    		(OH)
     
    10
  		• Lizardite9.ED.15
    Mg
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
  		• Magnesiohornblende9.DE.10
    ☐[Ca
     
    2
    		][Mg
     
    4
    		Al][(OH)
     
    2
    		|AlSi
     
    7
    		O
     
    22
    		]
  		• Muscovite
    var: Fuchsite    		9.EC.15
    K(Al,Cr)
     
    3
    		Si
     
    3
    		O
     
    10
    		(OH)
     
    2
  		• Pargasite9.DE.15
    [Na][Ca
     
    2
    		][Mg
     
    4
    		Al][(OH)
     
    2
    		|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
  		• Phlogopite9.EC.20
    KMg
     
    3
    		[(OH,F)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Talc9.EC.05
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
  		• Titanite9.AG.15
    CaTi[O|SiO
     
    4
    		]
  		• Tremolite9.DE.10
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
  		• Vermiculite9.EC.50
    (Mg,Fe,Al)
     
    3
    		(Al,Si)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·4H
     
    2
    		O
    Unclassified Minerals
  		• Bravoite-
    (Fe,Ni)S
     
    2
  		• 'Chlorite Group'-
  		• 'Hornblende'-
  		• Limonite-
    FeO(OH)·nH
     
    2
    		O
  		• 'Serpentine Group
    var: Bastite'    		-
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O


    48 entries listed. 42 valid minerals.

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