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Black Mountain Quarry (Black Mountain pegmatite), Rumford, Oxford Co., Maine, USA

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Detailed Mineral List:
Albite
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
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Amblygonite
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
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Beryl
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
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
'Biotite'
Reference: USGS Bull 445
Cassiterite
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)
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)
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
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Dickinsonite-(KMnNa)
Reference: Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt
Dravite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Elbaite
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
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: Eosphorite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Fairfieldite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Fluorapatite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998); Rocks & Min. (2007) 82:242
Fluorapatite var: Carbonate-rich Fluorapatite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Goyazite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Greifensteinite
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
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
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Hydroxylapatite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Photo: Hydroxylapatite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Hydroxylapatite var: Carbonate-rich Hydroxylapatite
Reference: King & Foord, 1994. Mineralogy of Maine, V.1.
Hydroxylherderite
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
'Jahnsite'
Reference: Van King
Kosnarite (TL)
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
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
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
Reference: "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998)
Metatorbernite
Reference: No reference listed
Microcline
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
Reference: No reference listed
Montebrasite
Reference: No reference listed
Montmorillonite
Reference: No reference listed
Muscovite
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
Nontronite
Reference: Van King
Olenite
Reference: King, V. and Foord, E., 1994, Mineralogy of Maine, volume 1.
Opal var: Opal-AN
Reference: No reference listed
Phosphuranylite
Reference: No reference listed
Photo: Phosphuranylite from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Pollucite
Reference: No reference listed
Purpurite
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
Reference: No reference listed
Quartz
Reference: USGS Bull 445
Reddingite
Reference: King, V.T., 1994, Mineralogy of Maine, Descriptive Mineralogy, v.1.
Rhodochrosite
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Rockbridgeite
Reference: No reference listed
Romanèchite
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
Reference: King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
Rossmanite
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
Reference: USGS Bull 445
Siderite
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Sphalerite
Reference: No reference listed
Spodumene
Reference: Rocks & Min. (2007) 82:242; USGS Bull 445
Photo: Spodumene from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Strunzite
Reference: No reference listed
Tantalite-(Mn)
Reference: No reference listed
Photo: © 2008 Jesse Crawford. Tantalite-(Mn) from Black Mountain Quarry, Rumford, Oxford Co., Maine, USA
Titanite
Reference: No reference listed
Todorokite
Reference: Van King
Torbernite
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
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
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Uranophane
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Vivianite
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
Whitlockite
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
Reference: Mineralogical Record 22:382
Zircon
Reference: Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.


75 entries listed. 56 valid minerals. 1 (TL) - type locality of valid minerals. 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.



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