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Purdy Mine, Mattawan, Mattawan Township, Nipissing District, Ontario, Canada

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Ref.: Geological Survey of Canada Paper 70-50.

In pegmatite.

The deposit was discovered in 1941 by J. Purdy and H. MacDonald of Eau Claire. They recovered about $20,000 worth of muscovite in 1941 and 1942. The deposit was later operated by Purdy Mica Mines Limited (19442-1945) and by Northern Mica Company (1949-1953). The total production amounted to 2,942,786 pounds of mica valued at $1,577,326. The mica was trimmed in shops at Mattawa and North Bay. The mine was worked by open-cuts, an adit, and shafts. The deepest opening is 130 feet.





Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Allanite'
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Biotite
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Chlorite Group'
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Euxenite-(Y)
    (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
     
    2
    		O
     
    6
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Fergusonite'
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Hornblende'
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Monazite'
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Pyrite
    FeS
     
    2
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Quartz
    SiO
     
    2
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  'Tourmaline'
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Uraninite
    UO
     
    2
    Reference: [Geological Survey of Canada Paper 70-50]
  		•  Yttrotantalite-(Y)
    (Y,Ca,U
    4+
     
    		,Fe
    2+
     
    		)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    8
    Reference: [www.ontariominerals.com/onmins-xyz.htm.]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Geological Survey of Canada Paper 70-50]


    19 entries listed. 11 valid minerals.

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