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Mackinaw Mine (Weden Creek Mine), Monte Cristo, Monte Cristo District, Snohomish Co., Washington, USA

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SE 1/4 of the SW 1/4 of Section 19, T29-R11E

A Cu,Ni,Co,Au,Ag,U? mine

This mine is located on the west fork of Weden Creek.

It worked a mineralized fracture zone that can be traced for 3,000' on the surface and has a known depth of 125'. The ore body is from 11-30' with a known length of 90'.

Developments include 5 adits and an open cut.

It produced ore from 1900-1910

References:
*Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1
*Cannon, B. (1975): Minerals of Washington, p.45,62,71,72,88
*Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report





 Map Reference: 47°58'53"N , 121°26'31"W

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.



Mineral List:
  		•  Annabergite
    Ni
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Habit: coatings
    Colour: light green
    Reference: [Cannon, B. (1975): Minerals of Washington, p.45,72]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [Cannon, B. (1975): Minerals of Washington, p.45]
  		•  Calcite
    CaCO
     
    3
    Reference: [Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.72; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  Chrysocolla
    (Cu,Al)
     
    2
    		H
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    		·nH
     
    2
    		O
    Reference: [`Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990 ]
  		•  Cubanite
    CuFe
     
    2
    		S
     
    3
    Reference: [```Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Minerals of Washington, B. Cannon, 1975; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990]
    Site Photo
    Mackinaw Mine (Weden Creek Mine), Monte Cristo, Monte Cristo District, Snohomish Co., Washington, USA
    © Rob Lavinsky
  		•  Erythrite
    Co
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Habit: crusts
    Colour: pink
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.72,88; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  'Garnierite'
    Reference: [`Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990 ]
  		•  Langite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Robert O. Meyer collection]
    Site Photo
    Mackinaw Mine (Weden Creek Mine), Monte Cristo, Monte Cristo District, Snohomish Co., Washington, USA
    © 2004 ROM
  		•  Mackinawite (TL)
    (Fe,Ni)
     
    9
    		S
     
    8
    Type Locality: Mackinaw Mine (Weden Creek Mine), Monte Cristo, Monte Cristo District, Snohomish Co., Washington, USA
    Reference: [Minerals of Washington, B. Cannon, 1975]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: [`Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990 ]
  		•  Maucherite
    Ni
     
    11
    		As
     
    8
    Reference: [Cannon, B. (1975): Minerals of Washington, p.71]
  		•  Nickeline
    NiAs
    Reference: [Cannon, B. (1975): Minerals of Washington, p.45,62,71]
  		•  Nickelskutterudite
    var: Chloanthite
    NiAs
     
    2
    		 - excess As up to As
     
    2.5
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.71; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  Parnauite
    Cu
     
    9
    		[(OH)
     
    10
    		|SO
     
    4
    		|(AsO
     
    4
    		)
     
    2
    		] · 7H
     
    2
    		O
    Reference: [www.cannonmicroprobe.com/Mineral_Specimens.htm ]
  		•  Pentlandite
    (Fe,Ni)
     
    9
    		S
     
    8
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.45,62,72; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  Pyrite
    FeS
     
    2
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.72; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  Pyrite
    var: Bravoite
    (Fe,Ni)S
     
    2
    Reference: [Cannon, B. (1975): Minerals of Washington, p.62]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [`Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990 ]
  		•  Quartz
    SiO
     
    2
    Reference: [`Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; M. Huntting, 1956; Metal Mines of Washington-Preliminary Report; R. Derkey, N. Joseph, R. Lasmanis, 1990 ]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1; Cannon, B. (1975): Minerals of Washington, p.45; Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report]
  		•  Valleriite
    (Fe
    2+
     
    		,Cu)
     
    4
    		(Mg,Al)
     
    3
    		[(OH,O)
     
    6
    		|S
     
    4
    		]
    Reference: [Minerals of Washington, B. Cannon, 1975]


    22 entries listed. 18 valid minerals. 1 type locality (valid mineral).

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Washington, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 5th Nov 2009 13:51:48