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Black Mt. Quarry, Rumford, Oxford Co., Maine, USA

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(Black Mountain quarry)

Granite pegmatite. Oxford field. Primarily a mica quarry with four closely spaced nearly overlapping pits. Noted for its mineral specimen variety. The eosphorite from this locality was formerly the world record size (37 mm).

Ref.: Rocks & Minerals (1927): 2: 6.

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: 969.

Rocks & Minerals (1988): 63: 129-130.

Dyar, M.D., Guidotti, C.V., Core, D.P., Wearn, K.M., Wise, M.A., Francis, C.A., Johnson, K., Brady, J.B., Robertson, J.D., and Cross, L.R. (1999) Stable isotope and crystal chemistry of tourmaline across pegmatite-country rocks boundaries at Black Mountain and Mount Mica, southwestern Maine, USA. European Journal of Mineralogy: 11: 281-294.






 Map Reference: 44°35'7"N , 70°38'47"W

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Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Albite
    var: Cleavelandite
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Amblygonite
    LiAl[(F,OH)|PO
     
    4
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Apatite-(CaF)
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Apatite-(CaF)
    var: Carbonate-rich Apatite-(CaF)
    Ca
     
    5
    		[(F,O)|(PO
     
    4
    		,CO
     
    3
    		)
     
    3
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Apatite-(CaOH)
    Ca
     
    5
    		[OH|(PO
     
    4
    		)
     
    3
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Autunite
    Ca(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·11H
     
    2
    		O
    Reference: [No reference listed]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Beryllonite
    NaBe[PO
     
    4
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Cassiterite
    SnO
     
    2
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Columbite-(Mn)
    (Mn,Fe)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: [No reference listed]
  		•  Cookeite
    LiAl
     
    4
    		(Si
     
    3
    		Al)O
     
    10
    		(OH)
     
    8
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  'Dahllite'
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1.]
  		•  Dravite
    [Na][Mg
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Description: Well-known for red tourmaline fan to 1 meter plus.
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine.]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © 2002 John H. Betts
  		•  Eosphorite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)Al[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    Description: Former world record crystal sizes of double terminated crystals (37 mm)
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, volume 1.]
  		•  Fairfieldite
    Ca
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)[PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Goyazite
    SrAl
     
    3
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Greifensteinite
    Ca
     
    2
    		(Fe
    2+
     
    		, Mn)
     
    5
    		Be
     
    4
    		[(OH)
     
    4
    		|(PO
     
    4
    		)
     
    6
    		] · 6H
     
    2
    		O
    Reference: [www.uno.edu/pegmatology/abstract/abstniz.html.]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © Dick Dionne
  		•  'Gummite'
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1]
  		•  Heterosite
    (Fe
    3+
     
    		,Mn
    3+
     
    		)[PO
     
    4
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © 2003 John H. Betts
  		•  Hurlbutite
    CaBe
     
    2
    		[PO
     
    4
    		]
     
    2
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Hydroxylherderite
    CaBe[(OH,F)|PO
     
    4
    		]
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Kosnarite (TL)
    KZr
     
    2
    		(PO
     
    4
    		)
     
    3
    Type Locality: Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    Reference: [Brownfield, M. E., Foord, E. E., Sutley, S. J. and Botinelly, T. (1993): Kosnarite, KZr2(PO4)3, a new mineral from Mount Mica and Black Mountain, Oxford County, Maine. Am. Mineral. 78, 653-656.]
  		•  Laueite
    Mn
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.]
  		•  Lepidolite
    Reference: [No reference listed]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © 2008 Peter Cristofono
  		•  Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    Reference: ["Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)]
  		•  Metatorbernite
    Cu(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [No reference listed]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [No reference listed]
  		•  Mitridatite
    Ca
     
    2
    		Fe
    3+
    3
    		[O
     
    2
    		|(PO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    Reference: [No reference listed]
  		•  Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    Reference: [No reference listed]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [No reference listed]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [No reference listed]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © 2008 Peter Cristofono
  		•  Olenite
    (Na,[ ])[(Al,Li)
     
    3
    		][Al
     
    6
    		][(O,OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, volume 1.]
  		•  Opal
    var: Opal-AN
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [No reference listed]
  		•  Phosphuranylite
    (H
     
    3
    		O)
     
    3
    		KCa(UO
     
    2
    		)
     
    7
    		[O|PO
     
    4
    		]
     
    4
    		 · 8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Reference: [No reference listed]
  		•  Purpurite
    (Mn
    3+
     
    		,Fe
    3+
     
    		)[PO
     
    4
    		]
    Reference: [King, V.T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v.1.]
  		•  Pyrite
    FeS
     
    2
    Reference: [No reference listed]
  		•  Quartz
    SiO
     
    2
    Reference: [No reference listed]
  		•  Reddingite
    (Mn,Fe)
     
    3
    		(PO
     
    4
    		)
     
    2
    		·3H
     
    2
    		O
    Reference: [King, V.T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v.1.]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [No reference listed]
  		•  Rockbridgeite
    Fe
    2+
     
    		Fe
    3+
    4
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    3
    		]
    Reference: [No reference listed]
  		•  Romanèchite
    (Ba,H
     
    2
    		O)
     
    2
    		Mn
     
    5
    		O
     
    10
    Description: Localities which had psilomelane reported have been indiscriminately relabeled as romanèchite. As in this case, the original material was never analyzed and the listing appears erroneous.
    Reference: [King, V. and Foord,E., 1994, Mineralogy of Maine, v. 1.]
  		•  Roscherite
    Ca
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    5
    		Be
     
    4
    		[(OH)
     
    4
    		|(PO
     
    4
    		)
     
    6
    		] · 6H
     
    2
    		O
    Reference: [King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.]
  		•  Rossmanite
    [ ][LiAl
     
    2
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Dyar MD, Taylor ME, Lutz TM, Francis CA, Guidotti CV, Wise M (1998) Inclusive chemical characterization of tourmaline: Mössbauer study of Fe valence and site occupancy. American Mineralogist 83, 848-864. [samples 45 and 46, labeled olenite, are actually rossmanite]. ]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [No reference listed]
  		•  Siderite
    FeCO
     
    3
    Reference: [No reference listed]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [No reference listed]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [No reference listed]
  		•  Strunzite
    Mn
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    Reference: [No reference listed]
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Reference: [No reference listed]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © 2008 Jesse Crawford
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [No reference listed]
  		•  Todorokite
    (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
     
    6
    		O
     
    12
    		·3H
     
    2
    		O
    Reference: [Van King]
  		•  Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Reference: [No reference listed]
  		•  'Tourmaline
    var: Indicolite'
    Description: Crystals of good quality are only very rarely found. Most specimens from this locality are of "representative" quality.
    Reference: [A. Plante, personal knowledge.]
  		•  'Tourmaline
    var: Rubellite'
    Description: Black Mountain Mine is noted for its "fans" of pink elbaite - some as large as perhaps a foot high and across. The material is largely non-gem quality to "representative" quality. Really good quality crystals are quite rare here. It is the size and aesthetics of the "fans" which have attracted collector attention to the locality over the years.
    Reference: [www.cseg.ca/conferences/2000/825.PDF.]
    Site Photo
    Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
    © J. Wingard
  		•  'Tourmaline
    var: Verdelite'
    Description: Crystals of any quality are only rarely found. Most material is only of "representative" quality.
    Reference: [A. Plante, personal knowledge.]
  		•  Triphylite
    LiFe
    2+
     
    		[PO
     
    4
    		]
    Reference: [No reference listed]
  		•  Uraninite
    UO
     
    2
    Reference: [No reference listed]
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: []
  		•  Vivianite
    Fe
    2+
    3
    		(PO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Whitlockite
    Ca
     
    9
    		Mg[PO
     
    3
    		OH][PO
     
    4
    		]
     
    6
    Description: Known Black Mt. Quarry "whitlockite" is actually kosnarite.
    Reference: [King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [No reference listed]


    66 entries listed. 51 valid minerals. 1 type locality (valid mineral). 6 erroneous literature entries.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Maine, 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 15:16:55