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La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France

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Amphibolite quarry.



References:
- Germain C., Wimel J.L. (1992), Les minéraux des amphibolites de la carrière de La Roche, commune de Calanhel (Côtes d'Armor), Le Cahier des Micromonteurs (1992), (4), 23-29.





Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Actinolite
    var: Smaragdite
    Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		Si
     
    8
    		O
     
    22
    		(OH)
     
    2
    Reference: []
  		•  'Asbestos'
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  'Hornblende'
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  'K Feldspar'
    Reference: [various added photos]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Rutile
    TiO
     
    2
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Siderite
    FeCO
     
    3
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Thorite
    (Th,U)[SiO
     
    4
    		]
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Tremolite
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Le Cahier des Micromonteurs, (4), 23-29.]
    Site Photo
    La Roche Quarry, Calanhel, Callac, Côtes-d'Armor, Brittany, France
    © P L e Roch


    19 entries listed. 15 valid minerals.

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