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Cortlandt Township, Westchester Co., New York, USA

StandardDetailedBy ChemistrySearch GoogleMineral Report for Region

[Note that the city of Peekskill is no longer part of Cortlandt.]




Mineral list contains entries from the region specified including sub-localities

Group 4 - Oxides and Hydroxides
  		• Corundum4.CB.05
    Al
     
    2
    		O
     
    3
  		• Hercynite4.BB.05
    FeAl
     
    2
    		O
     
    4
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
      var: Titaniferous Magnetite4.BB.05
    Fe
    2+
     
    		(Fe
    3+
     
    		,Ti)
     
    2
    		O
     
    4
  		• Opal4.DA.10
    SiO
     
    2
    		·nH
     
    2
    		O
  		• Quartz4.DA.05
    SiO
     
    2
  		• Spinel4.BB.05
    MgAl
     
    2
    		O
     
    4
      var: Ceylonite4.BB.05
    MgAl
     
    2
    		O
     
    4
    Group 5 - Nitrates and Carbonates
  		• Calcite5.AB.05
    CaCO
     
    3
    Group 9 - Silicates
  		• Albite
    var: Oligoclase    		9.FA.35
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
  		• Almandine9.AD.25
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
  		• Biotite9..
  		• Cordierite9.CJ.10
    (Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    5
    		O
     
    18
  		• Epidote9.BG.05
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Kyanite9.AF.15
    Al
     
    2
    		[O|SiO
     
    4
    		]
  		• Magnesioriebeckite9.DE.25
    [ ][Na
     
    2
    		][Mg
     
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
  		• Muscovite9.EC.15
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Sapphirine9.DH.45
    (Mg,Fe)
     
    4-x
    		Al
     
    4+x
    		[Al
     
    4+x
    		Si
     
    2-x
    		O
     
    18
    		]O
     
    2
  		• Sillimanite9.AF.05
    Al
     
    2
    		[O|SiO
     
    4
    		]
  		• Staurolite9.AF.30
    (Fe
    2+
     
    		,Mg,Zn)
     
    1.5-2
    		Al
     
    9
    		[O
     
    6
    		|(OH,O)
     
    2
    		|(SiO
     
    4
    		)
     
    4
    		]
    Unclassified Minerals
  		• 'Amphibole Group'-
  		• 'Chlorite Group'-
  		• 'Emery'-
  		• 'Garnet Group'-
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
  		• Högbomite-
    (Mg,Fe)
     
    2
    		(Al,Ti)
     
    5
    		O
     
    10
  		• 'Orthopyroxene Subgroup'-
  		• 'Pyroxene Group'-
  		• 'Tourmaline'-
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z


    28 entries listed. 19 valid minerals.

    Localities in this Region:
    USA
     
    • New York
      • Westchester Co.
        • Cortlandt Township
          • Montrose

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in New York, 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: 30th Nov 2009 12:24:43