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Dunton Gem Quarry, Newry, Oxford Co., Maine, USA

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Granite pegmatite. This is a LCT class granite pegmatite. List also contains species from chlorite/actinolite schist host rocks. Hall's Ridge, Plumbago-Puzzle Mountain - Oxford pegmatite field. Land currently owned by Plumbago Timber and Quarries LLC which permitted use of new mineral discovery information to appear on mindat.

The first Rose Quartz crystals known in the world were found at Mount Mica Quarry about 1913-1915. The second locality for genuine rose quartz crystals in the world, the Dunton Gem Quarry, Newry, produced it's first crystals in 1927. A third world locality was discovered in 1942, at the Rose Quartz Crystal locality, Newry, by George Crooker. Rose Quartz crystals were found at the Nevel Quarry, Newry and in the Red Hill Quarry Group, Rumford, Maine in 1949. Rose Quartz crystals were not known in Brazil until 1958.

CAUTION: Because of the high demand and low supply of the very special "Newry" gem tourmaline shades, Namibian tourmaline and Afghani tourmaline sellers, who have gem rough almost matching "Newry" color shades, report that they have brisk sales in Maine and New England. Their explanation is that the stones or rough have a "rare" color that mimics authentic Dunton Quarry tourmaline colors. However, buyer beware! It is more than unlikely to have hundreds or thousands of carats of "rare color" tourmaline in stock! One important feature of genuine gem tourmaline from the Dunton Pegmatite is that almost all of the desirable light shades of pink and green tourmaline have a medium to bright blue-white FLUORESCE in short wave ultraviolet light. This property does not guarantee that the tourmaline in question is genuinely from Newry, but it does limit the mislabeling or "mis-branding" of tourmaline as coming from Newry when it does not.

Beesley (1975) was the first to discover that Dunton Quarry untreated elbaite FLUORESCES "light chalky blue" in short wave ultraviolet light while he reported that heat treating intensifies Dunton Quarry tourmaline's blue-white fluorescence. Heating may occasionally turn the body color of Dunton elbaite colorless, however. Fluorescent tourmaline is uncommon, but not rare and has been observed in localities in Maine, Brazil, Afghanistan, Madagascar, Mozambique and elsewhere. Maine tourmaline appears to have some of the stronger fluorescing tourmaline with the pink body color tourmaline fluorescing brighter than green body color tourmaline. Inclusions are very distinctive in Newry gem tourmaline and inclusions may have three phases. Beesley provided illustrations of the inclusions in Dunton elbaite and suggested that these inclusions could also be used to verify the origin of the Newry tourmaline from mislabeled specimens. The species in Dunton Quarry tourmaline inclusions was not identified, however.

Ref: King, V. T., 1975, Newry, Maine: A Pegmatite Phosphate Locality, Mineralogical Record, v. 6, p. 189-204.
Dunn, P.J. & Gaines, R.V. (1978): Uralolite from the Dunton Gem Mine, Newry, Maine: A second occurrence. Mineralogical Record 9(2), 99-100
Beesley, C, 1975, Dunton Mine Tourmaline: An Analysis. Gems and Gemology, 15:19-24.



References:
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1
King, V. (ed.), 2000, Mineralogy of Maine, V. 2.





 Map Reference: 44°32'34"N , 70°43'23"W

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.



Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Scott Whittemore
  		•  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: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Anatase
    TiO
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Annite
    KFe
    2+
    3
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Apatite-(CaF)
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2007 Peter Cristofono
  		•  Apatite-(CaF)
    var: Carbonate-rich Apatite-(CaF)
    Ca
     
    5
    		[(F,O)|(PO
     
    4
    		,CO
     
    3
    		)
     
    3
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Apatite-(CaOH)
    Ca
     
    5
    		[OH|(PO
     
    4
    		)
     
    3
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Autunite
    Ca(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·11H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Beraunite
    Fe
    2+
     
    		Fe
    3+
    5
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    4
    		] · 4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Bermanite
    Mn
    2+
     
    		(H
     
    2
    		O)
     
    4
    		[Mn
    3+
    2
    		(OH)
     
    2
    		(PO
     
    4
    		)
     
    2
    		]
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Bertrandite
    Be
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Beryl
    var: Aquamarine
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Beryl
    var: Goshenite
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Beryl
    var: Morganite
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1.]
  		•  Beryllonite
    NaBe[PO
     
    4
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  β-Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Biotite
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Bismuth
    Bi
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Cassiterite
    SnO
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2001 John H. Betts
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Chrysoberyl
    BeAl
     
    2
    		O
     
    4
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Clarkeite
    (Na,Ca,Pb)
     
    2
    		U
     
    2
    		(O,OH)
     
    7
    Reference: [Not found according to King, V. T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v. 1]
  		•  Clinochlore
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Columbite-(Mn)
    (Mn,Fe)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2008 Peter Cristofono
  		•  Cookeite
    LiAl
     
    4
    		(Si
     
    3
    		Al)O
     
    10
    		(OH)
     
    8
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Crandallite
    CaAl
     
    3
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Cryptomelane
    K(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  'Dahllite'
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1.]
  		•  Diadochite
    Fe
    3+
    2
    		(PO
     
    4
    		)(SO
     
    4
    		)(OH)·5H
     
    2
    		O
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Dickinsonite-(KMnNa)
    {KNa}{Mn
    2+
     
    		[ ]}{Ca}{Na
     
    3
    		}{Mn
    2+
    13
    		}{Al}[(OH)
     
    2
    		|(PO
     
    4
    		)
     
    12
    		]
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Dravite
    [Na][Mg
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Am Min 83:848–864 (1998)]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2005 Peter Cristofono
  		•  Earlshannonite
    Mn
    2+
     
    		Fe
    3+
    2
    		(PO
     
    4
    		)
     
    2
    		(OH)
     
    2
    		·4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Description: Beesley (1975) was the first to discover that Dunton Quarry untreated elbaite fluoresces light chalky blue in short wave ultraviolet light while heat treating intensifies the fluorescence. Heating may turn Dunton elbaite colorless. Fluorescent tourmaline is rare, but has been observed several localities in Maine, Brazil, and Mozambique and elsewhere. Maine tourmaline appears to have the strongest fluorescing pink and green tourmaline with the pink tourmaline fluorescing brighter than green tourmaline. Inclusions are distinctive in Newry gem tourmaline and unusual inclusions have three phases. Beesley provided illustrations of the inclusions in Dunton elbaite and suggested that these could also be used to verify the origin of the Newry tourmaline from mislabeled specimens.
    Reference: [Beesley, C., 1975, Dunton Mine Tourmaline: An Analysis, Gems and Gemology,v. 15, p. 19-24.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Rob Lavinsky
  		•  Eosphorite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)Al[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Fairfieldite
    Ca
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)[PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Ferrostrunzite
    Fe
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Foitite
    [ ][Fe
    2+
    2
    		(Al,Fe
    3+
     
    		)][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Fourmarierite
    PbU
     
    4
    		O
     
    13
    		·4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Goyazite
    SrAl
     
    3
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Greifensteinite
    Ca
     
    2
    		(Fe
    2+
     
    		, Mn)
     
    5
    		Be
     
    4
    		[(OH)
     
    4
    		|(PO
     
    4
    		)
     
    6
    		] · 6H
     
    2
    		O
    Reference: [King, V.T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v. 1; King, V. T. in preparation, Mineralogy of Newry, Maine.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © S.M. Whittemore
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Herderite
    CaBe[(F,OH)|PO
     
    4
    		]
    Description: Specimens analyzed by Leavens, et al. (1978) from this locality were true hydroxylherderite. Leavens, et al., 1978, chemically analyzed specimens from this location and found them to be the purest hydroxylherderite of any they studied.
    Reference: [Leavens, P. et al, Compositional and Refractive Index Variations of the Herderite-Hydroxyl-herderite Series, Am Min v63, p 913-917 (1978)]
  		•  Heterosite
    (Fe
    3+
     
    		,Mn
    3+
     
    		)[PO
     
    4
    		]
    Description: Moore (2000) analyzed three heterosite specimens from this locality and found the Mn/Mn + Fe ratios were 0.47, 0.39, and 0.32
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; Moore, P. B. in King, V. (ed), 2000, Mineralogy of Maine, V. 2, p. 333-336.]
  		•  Hureaulite
    (Mn,Fe)
     
    5
    		(PO
     
    3
    		OH)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Hydroxylherderite
    CaBe[(OH,F)|PO
     
    4
    		]
    Reference: [Am Min 63:913-917]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © S.M. Whittemore
  		•  Jahnsite-(CaMnFe)
    CaMn
    2+
     
    		Fe
    2+
    2
    		Fe
    3+
    2
    		(PO
     
    4
    		)
     
    4
    		(OH)
     
    2
    		 · 8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Kastningite
    (Mn
    2+
     
    		,Fe
    2+
     
    		,Mg)Al
     
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Description: Kastningite at this locality occurs in the same paragenetic setting as mangangordonite in the blue tourmaline rims filled by siderite, quartz, and late phosphates. Kastningite is colorless to white, but commonly transparent with a steeply sloping termination. It is possible that kastningite may be associated with the much rarer mangangordonite.
    Reference: [Van King]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Laueite
    Mn
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Lepidolite
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2003 Peter Cristofono
  		•  Löllingite
    FeAs
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Magnesiohornblende
    ☐[Ca
     
    2
    		][Mg
     
    4
    		Al][(OH)
     
    2
    		|AlSi
     
    7
    		O
     
    22
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Mangangordonite (TL)
    Mn
    2+
     
    		Al
     
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Type Locality: Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1., p.225.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Metaswitzerite
    Mn
     
    3
    		(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Metatorbernite
    Cu(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Mitridatite
    Ca
     
    2
    		Fe
    3+
    3
    		[O
     
    2
    		|(PO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © JBS 2006
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Moraesite
    Be
     
    2
    		[OH|PO
     
    4
    		] · 4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Muscovite
    var: Damourite
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [No reference listed]
  		•  Opal
    var: Opal-AN
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Perhamite (TL)
    (Ca,Sr)
     
    3
    		Al
     
    7.7
    		Si
     
    3
    		P
     
    4
    		O
     
    23.5
    		(OH)
     
    14.1
    		·8H
     
    2
    		O
    Type Locality: Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    Reference: [Mineralogical Magazine 41,437-442(1977)]
  		•  Petalite
    LiAlSi
     
    4
    		O
     
    10
    Reference: [King, V. T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v. 1]
  		•  Phosphophyllite
    Zn
     
    2
    		Fe(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Phosphosiderite
    FePO
     
    4
    		·2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Phosphuranylite
    (H
     
    3
    		O)
     
    3
    		KCa(UO
     
    2
    		)
     
    7
    		[O|PO
     
    4
    		]
     
    4
    		 · 8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  'Pinite'
    Reference: [King & Foord, 1994. Mineralogy of Maine, V.1]
  		•  Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Pyrite
    FeS
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Quartz
    SiO
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Quartz
    var: Rose Quartz
    Description: Second locality in the world for rose quartz crystals.
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Reddingite ?
    (Mn,Fe)
     
    3
    		(PO
     
    4
    		)
     
    2
    		·3H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Rockbridgeite
    Fe
    2+
     
    		Fe
    3+
    4
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    3
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  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
    Description: Published chemical analyses of Dunton roscherite show it to be very iron-rich and therefore greifensteinite, although there may have minute compositional zones of manganese-rich mineral, but that possibility has not been published.
    Reference: [Dunn, P.J. & Gaines, R.V. (1978): Uralolite from the Dunton Gem Mine, Newry, Maine: A second occurrence. Mineralogical Record 9(2), 99-100]
  		•  Rutherfordine
    (UO
     
    2
    		)[CO
     
    3
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Schoepite
    (UO
     
    2
    		)
     
    8
    		O
     
    2
    		(OH)
     
    12
    		 · 12H
     
    2
    		O
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Schoonerite
    ZnMn
    2+
     
    		Fe
    2+
    2
    		Fe
    3+
     
    		(PO
     
    4
    		)
     
    3
    		(OH)
     
    2
    		 · 9H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Scorzalite
    (Fe
    2+
     
    		,Mg)Al
     
    2
    		[OH|PO
     
    4
    		]
     
    2
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Siderite
    FeCO
     
    3
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Spodumene
    var: Kunzite
    Description: Transparent, gem quality and mostly flawless kunzite has been found as a single specimen (~4x4x1 cm) at the Dunton Quarry. Pink spodumene that is not of gem quality does not qualify as kunzite.
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Stewartite
    Mn
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 8H
     
    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: 730.]
  		•  Strengite
    FePO
     
    4
    		·2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Strunzite
    Mn
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Switzerite
    (Mn,Fe)
     
    3
    		(PO
     
    4
    		)
     
    2
    		·7H
     
    2
    		O
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2004 JBS
  		•  Todorokite
    (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
     
    6
    		O
     
    12
    		·3H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  'Tourmaline
    var: Achroite'
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  'Tourmaline
    var: Indicolite'
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  'Tourmaline
    var: Rubellite'
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  'Tourmaline
    var: Verdelite'
    Reference: [King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.]
  		•  'Tourmaline
    var: Watermelon Tourmaline'
    Reference: [King & Foord, 1994. Mineralogy of Maine, V. 1.]
  		•  Triphylite
    LiFe
    2+
     
    		[PO
     
    4
    		]
    Description: Moore (2000) analyzed two triphylite specimens from this locality and found the Mn/Mn + Fe ratio were 0.42 and 0.36.
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; Moore, P. B. in King, V. (ed), 2000, Mineralogy of Maine, V. 2, p. 333-336.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © 2007 Peter Cristofono
  		•  Triploidite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[OH|PO
     
    4
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Unnamed (Ca-analogue of Zigrasite)
    CaZr[PO
     
    4
    		]
     
    2
    		·4H
     
    2
    		O
    Reference: [Min.Mag. 73,415(2009)]
  		•  Uralolite
    Ca
     
    2
    		Be
     
    4
    		[OH|PO
     
    4
    		]
     
    3
    		 · 5H
     
    2
    		O
    Habit: fibrous aggregates of minute radiating bladed crystals
    Colour: white
    Reference: [Dunn, P.J. & Gaines, R.V. (1978): Uralolite from the Dunton Gem Mine, Newry, Maine: A second occurrence. Mineralogical Record 9(2), 99-100]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Uraninite
    UO
     
    2
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Ushkovite
    MgFe
    3+
    2
    		[PO
     
    4
    		]
     
    2
    		(OH)
     
    2
    		 · 8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Vandendriesscheite
    PbU
     
    7
    		O
     
    22
    		·12H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Vanmeersscheite
    U
    4+
     
    		(UO
     
    2
    		)
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 4H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Vivianite
    Fe
    2+
    3
    		(PO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Wardite
    NaAl
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Whitlockite
    Ca
     
    9
    		Mg[PO
     
    3
    		OH][PO
     
    4
    		]
     
    6
    Reference: [Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols]
  		•  Wodginite
    Mn(Sn,Ta)Ta
     
    2
    		O
     
    8
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Wölsendorfite
    (Pb,Ca)U
     
    2
    		O
     
    7
    		·2H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
  		•  Xanthoxenite
    Ca
     
    4
    		Fe
    3+
    2
    		[OH|(PO
     
    4
    		)
     
    2
    		]
     
    2
    		 · 3H
     
    2
    		O
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    © Van King
  		•  Zigrasite (TL)
    MgZr(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Type Locality: Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
    Reference: [Mineralogical Magazine 73, 415(2009)]
    Site Photo
    Dunton Gem Quarry, Newry, Oxford Co., Maine, USA
     
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.]


    124 entries listed. 101 valid minerals. 3 type localities (valid minerals). 4 erroneous literature entries.

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