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Iron Mountain, Iron Mountain complex, Fremont Co., Colorado, USA

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On the north side of Pine Gulch, a tributary of Grape Creek, 10 1/2 mi southwest of Canon City (T. 19-20 S., R. 72 W.). The area is reached from the Copper Gulch road between Royal Gorge (Parkdale) and Westcliffe. ("Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997)

Rocks consist of olivine gabbro, anorthosite, pyroxenite, and dunites.





Mineral List:
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Anorthite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  'Apatite'
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [Minerals of Colorado (1997) Eckel, E. B.]
  		•  Augite
    var: Titanian Augite
    (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)
     
    2
    		O
     
    6
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Bastnäsite-(Ce)
    (Ce,La)[F|CO
     
    3
    		]
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Biotite
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Hercynite
    FeAl
     
    2
    		O
     
    4
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Kaersutite
    [Na][Ca
     
    2
    		][Mg
     
    4
    		Ti][O|OH|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Nepheline
    (Na,K)[AlSiO
     
    4
    		]
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Rutile
    TiO
     
    2
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Smythite
    (Fe,Ni)
     
    9
    		S
     
    11
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Spinel
    MgAl
     
    2
    		O
     
    4
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Ulvöspinel
    Fe
     
    2
    		TiO
     
    4
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]


    21 entries listed. 17 valid minerals.

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