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Gloucester, Essex Co., Massachusetts, USA

StandardDetailedBy ChemistryMineral Photos (42)Site Photos (2)Search GoogleMineral Report for Region

Area granite quarries and other bedrock exposures of alkaline Cape Ann granite and associated pegmatites and miarolitic cavities.



References:
Cooke, Josiah P., Jr. (1866): On Danalite, a new Mineral Species from the Granite of Rockport, Mass. (American Journal of Science and Arts 47:73-78).

Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County.

Palache, Charles (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255).

Dennen, W. H. (1992): Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts.




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: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: []
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Albite
    var: Oligoclase
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  'Allanite'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Ankerite ?
    Ca(Fe
    2+
     
    		 ,Mg,Mn
    2+
     
    		)(CO
     
    3
    		)
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Annite
    KFe
    2+
    3
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Merrill, George P. (1889): The Collection of Building and Ornamental Stones in the U.S. National Museum, p. 554.]
  		•  Anorthite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Anorthite
    var: Labradorite
    (Ca,Na)[Al(Al,Si)Si
     
    2
    		O
     
    8
    		]
    Reference: [Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County, Massachusetts; Gleba, Peter (1978): Massachusetts Mineral & Fossil Localities.]
    Site Photo
    Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Anorthoclase
    (Na,K)[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  'Apatite'
    Reference: [Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County, Massachusetts]
  		•  Astrophyllite
    (K,Na)
     
    3
    		(Fe,Mn)
     
    7
    		Ti
     
    2
    		Si
     
    8
    		O
     
    24
    		(O,OH)
     
    7
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  Biotite
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Calcite
    CaCO
     
    3
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Chevkinite-(Ce)
    (Ce,La,Ca,Th)
     
    4
    		(Fe
    2+
     
    		,Mg)(Fe
    2+
     
    		,Ti,Fe
    3+
     
    		)
     
    2
    		(Ti,Fe
    3+
     
    		)
     
    2
    		[O
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
     
    2
    Reference: [S. Pavadore collection]
    Site Photo
    Gloucester, Essex Co., Massachusetts, USA
    © 2008 Peter Cristofono
  		•  'Chlorite Group'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Chloritoid
    (Fe
    2+
     
    		,Mg,Mn
    2+
     
    		)Al
     
    2
    		[O|(OH)
     
    2
    		|SiO
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Danalite
    Fe
    2+
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    Reference: [Palache, C. (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255); Yale Peabody Museum no. 3290.]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Fayalite
    Fe
    2+
    2
    		[SiO
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  'Fergusonite'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Ferro-anthophyllite
    ☐[Fe
    2+
    2
    		][Fe
    2+
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Ferrohornblende
    ☐[Ca
     
    2
    		][Fe
    2+
    4
    		Al][(OH)
     
    2
    		|AlSi
     
    7
    		O
     
    22
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  Fluorite
    CaF
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Fluorite
    var: Yttrocerite
    (Ca,Y,Ce)F
     
    2+x
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  'Gadolinite'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Galena
    PbS
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Gedrite
    ☐[Mg
     
    2
    		][Mg
     
    3
    		Al
     
    2
    		][(OH)
     
    2
    		|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Grunerite
    [ ][Fe
    2+
    2
    		][Fe
    2+
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Halite
    NaCl
    Reference: [P Cristofono collection , 2007]
    Site Photo
    Bass Rocks area, Gloucester, Essex Co., Massachusetts, USA
    © 2007 Peter Cristofono
  		•  Hastingsite
    [Na][Ca
     
    2
    		][Fe
    2+
    4
    		Fe
    3+
     
    		][(OH)
     
    2
    		|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
    Reference: [AmMin 57:1404-1412 (1972)]
  		•  Hedenbergite
    CaFe
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Palache, C. (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255)]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  'Hornblende'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Hypersthene
    (Fe,Mg)SiO
     
    3
    Reference: [Sears, JH, 1905, Geology of Essex County, Mass]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  'Lepidomelane'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Microcline
    var: Amazonite
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Molybdenite
    MoS
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  'Monazite'
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Nepheline
    (Na,K)[AlSiO
     
    4
    		]
    Reference: [Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County, Massachusetts]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Sears, JH, 1905, Geology of Essex County, Mass]
  		•  Opal
    var: Opal-AN
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Orthoclase
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  'Perthite'
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  Phenakite
    Be
     
    2
    		[SiO
     
    4
    		]
    Reference: [Palache, C. (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255)]
  		•  Pigeonite
    (Mg,Fe
    2+
     
    		,Ca)(Mg,Fe
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    Reference: [Dennen, W. H. 1992, Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts]
  		•  'Psilomelane'
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Pyrite
    FeS
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Quartz
    SiO
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Quartz
    var: Blue Quartz
    Reference: [Gleba, 1978: MA Mineral and Fossil Localities]
  		•  Quartz
    var: Citrine
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Quartz
    var: Smoky Quartz
    SiO
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Riebeckite
    [ ][Na
     
    2
    		][Fe
    2+
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Riebeckite
    var: Crocidolite
    Reference: [P Cristofono collection , 2009]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Rutile
    TiO
     
    2
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Siderite
    FeCO
     
    3
    Reference: [Palache, C. (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255)]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Palache, C. (1907): Phenakite as an Alteration Product of Danalite From Gloucester, Mass. (American Journal of Science 24:252-255)]
  		•  Tantalite
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Thorite
    (Th,U)[SiO
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Thorite
    var: Orangite
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]
    Site Photo
    Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA
    © 2009 Peter Cristofono
  		•  Zircon
    var: Cyrtolite
    Zr[(SiO
     
    4
    		),(OH)
     
    4
    		]
    Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]


    73 entries listed. 47 valid minerals.

    Localities in this Region:
    USA
     
    • Massachusetts
      • Essex Co.
        • Gloucester

    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 Massachusetts, 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: 28th Nov 2009 19:56:10