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Crump's Quarry, Mineral Hill, Elwyn, Middletown Township, Delaware Co., Pennsylvania, USA

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Described as being on the "grounds of the Pennsylvania Training School for the Feeble Minded.", 0.4 km (0.25 mile) north of State Road, and 1.6 km (1 mile) west of Media. Feldspar quarries, pegmatites, and exposures are nearby.

In "pyroxenite" and "metaperidotite."



References:
Gordon's Mineralogy of Pennsylvania (1922) p. 191





Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Albite
    var: Albite Moonstone
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Albite
    var: Sunstone
    Description: described as oligoclase sunstone
    Reference: [Gordon's Mineralogy of Pennsylvania (1922) p. 191]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Anthophyllite
    ☐[Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Asbestos'
    Description: amphibole asbestos
    Reference: [Gordon's Mineralogy of Pennsylvania (1922) p. 191]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Chlorite Group'
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Chromite
    FeCr
     
    2
    		O
     
    4
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Columbite
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Corundum
    Al
     
    2
    		O
     
    3
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Deweylite'
    Mg
     
    4
    		Si
     
    3
    		O
     
    10
    		·6H
     
    2
    		O ?
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
    Site Photo
    Crump's Quarry, Mineral Hill, Elwyn, Middletown Township, Delaware Co., Pennsylvania, USA
    © 2007, JGW
  		•  Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Fergusonite'
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Hornblende'
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Hypersthene
    (Fe,Mg)SiO
     
    3
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Magnesite
    MgCO
     
    3
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Microcline
    var: Amazonite
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Orthoclase
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Orthoclase
    var: Delawarite
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Quartz
    SiO
     
    2
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Samarskite-(Y)
    (Y,Fe
    3+
     
    		,Fe
    2+
     
    		,U,Th,Ca)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    8
    Description: assumed to be Y dominant
    Reference: [Gordon's Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  'Serpentine Group
    var: Retinalite'
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Tremolite
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]
  		•  Vermiculite
    (Mg,Fe,Al)
     
    3
    		(Al,Si)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·4H
     
    2
    		O
    Reference: [Gordon\'s Mineralogy of Pennsylvania (1922) p. 191]


    28 entries listed. 15 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Pennsylvania, 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: 7th Nov 2009 00:17:06