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Harford Co., Maryland, USA

StandardDetailedBy ChemistryMineral Photos (3)Site Photos (1)Search GoogleMineral Report for Region

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


Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  'Apatite'
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
  		•  'Chalcedony
    var: Moss Agate'
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  'Chlorite Group'
    Reference: []
  		•  Chromite
    FeCr
     
    2
    		O
     
    4
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Chrysotile
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Enstatite
    var: Bronzite
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
    Site Photo
    Broad Creek Mine, Whiteford, Harford Co., Maryland, USA
    © 2001 John H. Betts
  		•  Pyrite
    FeS
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Quartz
    SiO
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Quartz
    var: Jasper
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Quartz
    var: Smoky Quartz
    SiO
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Rutile
    TiO
     
    2
    Reference: []
    Site Photo
    Dinning Rutile Prospect, Harford Co., Maryland, USA
    © Alan Goldstein
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Staurolite
    (Fe
    2+
     
    		,Mg,Zn)
     
    1.5-2
    		Al
     
    9
    		[O
     
    6
    		|(OH,O)
     
    2
    		|(SiO
     
    4
    		)
     
    4
    		]
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]
  		•  'Tourmaline'
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z
    Reference: [Gems and Minerals of America - Jay Ellis Ransom-1974]


    20 entries listed. 10 valid minerals.

    Localities in this Region:
    USA
     
    • Maryland
      • Harford Co.
        • Whiteford

    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 Maryland, 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: 12th Nov 2009 18:33:27