Mindat Logo

Black Mountain Quarry (Black Mountain pegmatite), Rumford, Oxford Co., Maine, USA
This page is currently not sponsored. Click here to sponsor this page.

 


Detailed Mineral List:
Albite
Formula: NaAlSi3O8
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Rocks & Min. (2007) 82:242; Mineralogical Record 22:382; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Albite var: Cleavelandite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); USGS Bull 445
Albite var: Zygadite
Reference: Van King
Photo: © Van King. Zygadite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Amblygonite
Formula: LiAl(PO4)F
Description: Identification confirmed by Michael Wise.
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Rocks & Min. (2007) 82:242
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Beryl
Formula: Be3Al2(Si6O18)
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Rocks & Min. (2007) 82:242; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Photo: Beryl from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Beryllonite
Formula: NaBePO4
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
'Biotite'
Reference: USGS Bull 445
Cassiterite
Formula: SnO2
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Wise, Michael A.; Brown, Cathleen D. (2011): Chemical composition of coexisting columbite-group minerals and cassiterite from the Black Mountain pegmatite, Maine. Eur. J. Mineral. 23, 817-828.; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Columbite-(Fe)
Formula: FeNb2O6
Reference: Wise, Michael A.; Brown, Cathleen D. (2011): Chemical composition of coexisting columbite-group minerals and cassiterite from the Black Mountain pegmatite, Maine. Eur. J. Mineral. 23, 817-828.
Columbite-(Mn)
Formula: (Mn,Fe)(Nb,Ta)2O6
Reference: Wise, Michael A.; Brown, Cathleen D. (2011): Chemical composition of coexisting columbite-group minerals and cassiterite from the Black Mountain pegmatite, Maine. Eur. J. Mineral. 23, 817-828.
Photo: Columbite-(Mn) from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(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.
Dickinsonite-(KMnNa)
Formula: {KNa}{Mn2+◻}{Ca}{Na3}{Mn2+13}{Al}(PO4)12(OH)2
Reference: Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Description: Well-known for red tourmaline fan to 1 meter plus.
Reference: King, V. and Foord, E., 1994, Mineralogy of Maine.; USGS Bull 445
Photo: © 2002 John H. Betts. Elbaite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Eosphorite
Formula: (Mn2+,Fe2+)Al(PO4)(OH)2 · H2O
Description: Former world record crystal sizes of double terminated crystals (37 mm)
Reference: King, V. and Foord, E., 1994, Mineralogy of Maine, volume 1.
Photo: © 2010 Peter Cristofono. Eosphorite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Fairfieldite
Formula: Ca2(Mn2+,Fe2+)(PO4)2 · 2H2O
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Fluorapatite
Formula: Ca5(PO4)3F
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Rocks & Min. (2007) 82:242
Fluorapatite var: Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Goyazite
Formula: SrAl3(PO4)2(OH)5 · H2O
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Greifensteinite
Formula: Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O
Reference: www.uno.edu/pegmatology/abstract/abstniz.html.
Photo: © Dick Dionne. Greifensteinite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
'Gummite'
Reference: King & Foord, 1994. Mineralogy of Maine, V.1
Heterosite
Formula: (Fe3+,Mn3+)PO4
Description: Parent triphylite of this locality has Mn/Mn + Fe = 0.42 (Moore, 2000).
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998) Moore, P. B., 2000, Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V. T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology, Maine Geological Survey, Augusta, Maine, p. 333-336.
Photo: © 2003 John H. Betts. Heterosite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Hurlbutite
Formula: CaBe2(PO4)2
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Photo: Hydroxylapatite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Hydroxylherderite
Formula: CaBe(PO4)(OH,F)
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Kosnarite (TL)
Formula: KZr2(PO4)3
Type Locality: Black Mountain Quarry (Black Mountain pegmatite), 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
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Reference: King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
Lepidolite
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Photo: © 2008 Peter Cristofono. Lepidolite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Magnetite
Formula: Fe2+Fe3+2O4
Reference: USGS Bull 445; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
'Manganese Oxides'
Reference: Van King
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6-8H2O
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Reference: No reference listed
Microcline
Formula: KAlSi3O8
Reference: USGS Bull 445
Microlite Group
Reference: No reference listed
Photo: © 2012 Peter Cristofono. Microlite Group from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Mitridatite
Formula: Ca2Fe3+3(PO4)3O2 · 3H2O
Reference: No reference listed
Montebrasite
Formula: LiAl(PO4)(OH)
Reference: No reference listed
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: No reference listed
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: Up to 1.5 by 3 feet in size
Reference: USGS Bull 445
Photo: © 2008 Peter Cristofono. Muscovite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Olenite
Formula: Na(Al3)Al6(Si6O18)(BO3)3O3(OH)
Reference: King, V. and Foord, E., 1994, Mineralogy of Maine, volume 1.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Reference: No reference listed
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Reference: No reference listed
Photo: Phosphuranylite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Reference: No reference listed
Purpurite
Formula: (Mn3+,Fe3+)PO4
Description: Misidentified. The parent triphylite from this locality has Mn/Mn + Fe = 0.42 (Moore, 2000)
Reference: King, V. T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v. 1, Maine Geological Survey, Augusta, Maine, pp. 418 + 88 plates. Moore, P. B., 2000, Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V. T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology, Maine Geological Survey, Augusta, Maine, p. 333-336.
Pyrite
Formula: FeS2
Reference: No reference listed
Quartz
Formula: SiO2
Reference: USGS Bull 445
Reddingite
Formula: (Mn2+,Fe2+)3(PO4)2 · 3H2O
Reference: King, V.T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v.1.
Rhodochrosite
Formula: MnCO3
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Reference: No reference listed
Romanèchite
Formula: (Ba,H2O)2Mn5O10
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
Formula: Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O
Reference: King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
Rossmanite
Formula: ☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
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
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: USGS Bull 445
Siderite
Formula: FeCO3
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Sphalerite
Formula: ZnS
Reference: No reference listed
Spodumene
Formula: LiAlSi2O6
Reference: Rocks & Min. (2007) 82:242; USGS Bull 445
Photo: Spodumene from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: No reference listed
Tantalite-(Mn)
Formula: MnTa2O6
Reference: No reference listed
Photo: © 2008 Jesse Crawford. Tantalite-(Mn) from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Titanite
Formula: CaTi(SiO4)O
Reference: No reference listed
Todorokite
Formula: (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12 · 3H2O
Reference: Van King
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
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.; USGS Bull 445
Photo: © 2006 Peter Cristofono. Rubellite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
'Tourmaline var: Verdelite'
Description: Crystals of any quality are only rarely found. Most material is only of "representative" quality.
Reference: A. Plante, personal knowledge.; USGS Bull 445
Triphylite
Formula: LiFe2+PO4
Description: Triphylite from this locality has Mn/Mn + Fe = 0.42 (Moore, 2000).
Reference: Moore, P. B., 2000, Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V. T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology, Maine Geological Survey, Augusta, Maine, p. 333-336.
Uraninite
Formula: UO2
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Uranophane
Formula: Ca(UO2)2[HSiO4]2 · 5H2O
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Vivianite
Formula: Fe2+3(PO4)2 · 8H2O
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Whitlockite
Formula: Ca9Mg(PO4)6(HPO4)
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.
Wodginite
Formula: Mn(Sn,Ta)Ta2O8
Reference: Mineralogical Record 22:382
Zircon
Formula: ZrSiO4
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.


73 entries listed. 56 valid minerals. 1 type locality (valid mineral). 6 erroneous literature entries.

References

Rocks & Minerals (1927): 2: 6.

Maillot, E. E., Boos, M. F., and Mosier, M. (1949). Investigation of Black Mountain beryl deposit, Oxford County, Maine: U. S. Bureau of Mines, Report of Investigations 4412.

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.

Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt
Prepared by members of the Maine Federation Club 1973 pg. 22

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.

Moore, P. B., 2000, Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V. T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology, Maine Geological Survey, Augusta, Maine, p. 333-336.

Wise, Michael A.; Brown, Cathleen D. (2011): Chemical composition of coexisting columbite-group minerals and cassiterite from the Black Mountain pegmatite, Maine. Eur. J. Mineral. 23, 817-828.



Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: October 23, 2014 16:35:34 Page generated: October 13, 2014 15:06:06
Mineral and Locality Search
Mineral:
and/or Locality:
Options
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds