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Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA

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Granite pegmatite feldspar and mica quarry located on the West side of Collins Hill, 2½ miles (4 km) NE of Portland. Minerals from host rocks included in list. Mining began in the 1840s (Pawloski 2006). Operated by Deacon Ralph Pelton beginning in 1877 (Federal Writer's Project, 1938). Operated by F.E. Strickland beginning in 1904. Produced 2,000 to 5,000 long tons of feldspar per year and 200 to 400 tons of mica since 1927. Workings include an open cut 300 feet long by 200 feet wide and 140 feet deep. The quarry was closed when the ground water level was encountered. The quarry was filled in in recent years and is now under a golf course.



References:
Shannon, Earl V. (1920): Stickland's Quarry, Portland Connecticut (American Mineralogist 5:51-54)

Foye, W. G. (1922): Mineral Localities in the Vicinity of Middletown, Connecticut. (American Mineralogist 7:4-12)

Schairer, J. F. (1926): Lithiophilite and Other Rare Phosphates from Portland, Connecticut (American Mineralogist 11:101-104)

Zodac, Peter. (1937): Minerals of the Strickland Quarry (Rocks & Minerals: 12:131-141.)

Federal Writer's Project (1938). Connecticut: A Guide to Its Roads, Lore, and People, p. 402.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 851.

Brookins, D.G., Fairbairn, H.W., Hurley, P.M., and Pinson, W.H. (1969): A Rb-Sr Geochronologic Study of the Pegmatites of the Middletown Area, Connecticut). Contributions to Mineralogy and Petrology 22, 157-168.

Januzzi (1976), Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press).

Rocks & Minerals: 64: 471.

Rocks & Minerals: 70: 379.

Henderson, William A. (1995). Microminerals of Connecticut (Rocks & Minerals 70:420-425).

Pawloski, John A. (2006). Connecticut Mining (Mt. Pleasant, SC: Arcadia Publishing) pp. 50-51; 61.

Rocks & Minerals (1955) 30:351-358





Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © Steve Bonney 2006
  		•  Albite
    var: Oligoclase
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Allanite-(Ce) ?
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Description: "Reported by Schairer". No specimens known?
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Amblygonite
    LiAl[(F,OH)|PO
     
    4
    		]
    Description: Re-identified as montebrasite.
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Anatase
    TiO
     
    2
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.]
  		•  Anglesite
    PbSO
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Apatite-(CaF)
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2005 Steve Bonney
  		•  Apatite-(CaF)
    var: Mn-bearing Apatite-(CaF)
    (Ca,Mn
    2+
     
    		)
     
    5
    		(PO
     
    4
    		)
     
    3
    		(F,Cl,OH) or Ca
     
    5
    		([P,Mn
    3+
     
    		]O
     
    4
    		)
     
    3
    		(F,Cl,OH)
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Aragonite
    CaCO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Arsenolite
    As
     
    2
    		O
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Augelite
    Al
     
    2
    		[(OH)
     
    3
    		|PO
     
    4
    		]
    Reference: [Januzzi, R.E. and Seaman, David M. (1976) Mineral Localities Of Connecticut and Southern New York State and Pegmatite Minerals of the World. ]
  		•  Autunite
    Ca(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·11H
     
    2
    		O
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Bavenite
    Ca
     
    4
    		Be
     
    2
    		Al
     
    2
    		Si
     
    9
    		O
     
    26
    		(OH)
     
    2
    Reference: [Rocks & Min.: 70:422]
  		•  Bertrandite
    Be
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2008 Peter Cristofono
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2005 Steve Bonney
  		•  Beryl
    var: Aquamarine
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [Rocks & Min.:70:379; Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © Rob Lavinsky
  		•  Beryl
    var: Morganite
    Reference: [Rocks & Min.:70:379]
  		•  Biotite
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Bismite
    Bi
     
    2
    		O
     
    3
    Description: Schooner "presumes" it was really from the Case Quarry.
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Bismuthinite ?
    Bi
     
    2
    		S
     
    3
    Description: "Not seen" by Schooner.
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Bismutite
    (BiO)
     
    2
    		CO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Bityite
    CaLiAl
     
    2
    		[(OH)
     
    2
    		|BeAlSi
     
    2
    		O
     
    10
    		]
    Reference: [Handbook of Mineralogy - Volume II - Silicates]
  		•  Brazilianite ?
    NaAl
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    Reference: [Januzzi, R.E. and Seaman, David M. (1976) Mineral Localities Of Connecticut and Southern New York State and Pegmatite Minerals of the World. ]
  		•  Calcite
    CaCO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Cassiterite
    SnO
     
    2
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2009 Kevin M. Czaja
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  'Chlorite Group'
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Chrysotile
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Columbite-(Fe)
    FeNb
     
    2
    		O
     
    6
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © Edwards Minerals
  		•  Cookeite
    LiAl
     
    4
    		(Si
     
    3
    		Al)O
     
    10
    		(OH)
     
    8
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Cordierite
    (Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    5
    		O
     
    18
    Description: From schist.
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Crandallite
    CaAl
     
    3
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Dickinsonite-(KMnNa)
    {KNa}{Mn
    2+
     
    		[ ]}{Ca}{Na
     
    3
    		}{Mn
    2+
    13
    		}{Al}[(OH)
     
    2
    		|(PO
     
    4
    		)
     
    12
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 702, 718; Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [No reference listed]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2009 Peter Cristofono
  		•  Eosphorite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)Al[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Epsomite
    MgSO
     
    4
    		·7H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Eucryptite ?
    LiAl[SiO
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Fairfieldite ?
    Ca
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)[PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Fluorite
    CaF
     
    2
    Reference: [Fluorite: The Collector's Choice. Extra Lapis English No. 9; Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © CTrebilcock 2008
  		•  Gahnite
    ZnAl
     
    2
    		O
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Galena
    PbS
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Graphite
    C
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Greenockite
    CdS
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Hureaulite
    (Mn,Fe)
     
    5
    		(PO
     
    3
    		OH)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 702; Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Ilmenite ?
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Kyanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Description: Found in metamorphic host rock.
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Lacroixite
    NaAl[F|PO
     
    4
    		]
    Reference: [Seaman, David (1976) Pegmatite Minerals of the World]
  		•  Lepidolite
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © J.N. Wingard
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Lithiophilite
    LiMn
    2+
     
    		[PO
     
    4
    		]
    Description: Moore (2000) analyzed lithiophilite from this locality and found the Mn/Mn + Fe ratio was 0.97
    Reference: [Moore, P. B., 2000, in Mineralogy of Maine v2, p. 333-336.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Manganite ?
    Mn
    3+
     
    		O(OH)
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Melanterite
    FeSO
     
    4
    		·7H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2005 Steve Bonney
  		•  Mitridatite
    Ca
     
    2
    		Fe
    3+
    3
    		[O
     
    2
    		|(PO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    Reference: [Seaman, David. (1976) Pegmatite Minerals of the World]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Monazite-(Ce)
    (Ce,La,Nd,Th)PO
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Morinite ?
    Na
     
    2
    		Ca
     
    4
    		Al
     
    4
    		[(F,OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		]
     
    2
    		 · 3H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2006 Peter Cristofono
  		•  Natromontebrasite ?
    Reference: [Januzzi, R.E. and Seaman, David M. (1976) Mineral Localities Of Connecticut and Southern New York State and Pegmatite Minerals of the World. ]
  		•  Opal
    var: Opal-AN
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: []
  		•  Orthoclase
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Petalite
    LiAlSi
     
    4
    		O
     
    10
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Phenakite
    Be
     
    2
    		[SiO
     
    4
    		]
    Reference: [MinRec 19:332]
  		•  Phlogopite
    KMg
     
    3
    		[(OH,F)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Pickeringite
    MgAl
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Planerite
    Al
     
    6
    		[(OH)
     
    4
    		|HPO
     
    4
    		|PO
     
    4
    		]
     
    2
    		 · 4 H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  'Prochlorite'
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Purpurite
    (Mn
    3+
     
    		,Fe
    3+
     
    		)[PO
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Pyrite
    FeS
     
    2
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.; Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2005 Steve Bonney
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Pyrolusite
    MnO
     
    2
    Description: No pyrolusite dendrite or staining in a granite pegmatite in the world has been verified as pyrolusite. The name was a mistake in the nineteenth century which has been widely publicized.
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Quartz
    SiO
     
    2
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © 2006 Peter Cristofono
  		•  Quartz
    var: Citrine
    Reference: [Rocks & Min.: 70:381; Rocks & Minerals (1955) 30:351-358]
  		•  Quartz
    var: Milky Quartz
    Reference: []
  		•  Quartz
    var: Rock Crystal
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Quartz
    var: Rose Quartz
    Reference: [Rocks & Minerals (1955) 30:351-358]
  		•  Quartz
    var: Smoky Quartz
    SiO
     
    2
    Reference: [Rocks & Min.: 70:381; Rocks & Minerals (1955) 30:351-358]
  		•  Reddingite
    (Mn,Fe)
     
    3
    		(PO
     
    4
    		)
     
    2
    		·3H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Rhodonite
    MnSiO
     
    3
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Samarskite-(Y) ?
    (Y,Fe
    3+
     
    		,Fe
    2+
     
    		,U,Th,Ca)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    8
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  'Scapolite'
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Scheelite
    Ca[WO
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [No reference listed]
  		•  Scorodite
    Fe
    3+
     
    		AsO
     
    4
    		·2H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Siderite
    FeCO
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © CTrebilcock 2008
  		•  Spodumene
    var: Kunzite
    Reference: [Rocks & Min.: 70:382]
  		•  Sulphur
    S
     
    8
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Tantalite
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Description: Found at "Waterfall Locality".
    Reference: [Schooner, R., 1955, 99 Minerals from 1 Connecticut Hill, Rocks and Minerals, v. 30, p.351-358.]
  		•  Topaz ?
    Al
     
    2
    		[(F,OH)
     
    2
    		|SiO
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  'Tourmaline
    var: Rubellite'
    Reference: []
  		•  'Tourmaline
    var: Verdelite'
    Reference: []
  		•  Triplite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[(F,OH)|PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 851; Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Uraninite
    UO
     
    2
    Reference: [Rocks & Minerals (1955) 30:351-358]
    Site Photo
    Strickland Quarry, Collins Hill, Portland, Middlesex Co., Connecticut, USA
    © Michael Cline
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Vesuvianite ?
    Ca
     
    10
    		(Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    9
    		O
     
    34
    		(OH)
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Vivianite
    Fe
    2+
    3
    		(PO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  'Voltzite'
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Wardite ?
    NaAl
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press)]
  		•  Wodginite
    Mn(Sn,Ta)Ta
     
    2
    		O
     
    8
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.]
  		•  Wollastonite
    Ca[SiO
     
    3
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Xenotime-(Y)
    YPO
     
    4
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Zinnwaldite
    KLiFe
    2+
     
    		Al[(F,OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Weber &Sullivan, 1995. "Connecticut Mineral Locality Index" in Rocks & Minerals Vol 70. No. 6.]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Zircon
    var: Cyrtolite
    Zr[(SiO
     
    4
    		),(OH)
     
    4
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]
  		•  Zoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358]


    129 entries listed. 95 valid minerals. 12 erroneous literature entries.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Connecticut, 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: 27th Nov 2009 11:45:09