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Mount Mica Quarry (Mount Mica Mine), Paris, Oxford Co., Maine, USA

This page kindly sponsored by Henry Minot
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Latitude & Longitude (WGS84): 44° 16' 9'' North , 70° 28' 23'' West
Latitude & Longitude (decimal): 44.26944,-70.47306
GeoHash:G#: drvgu7504
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate

Granite pegmatite in the Oxford pegmatite field. Mount Mica is the second oldest elbaite occurrence in North America, after Clarkes Ledge Quarry, Chesterfield, Massachusetts (King, 2010; King and Teixeira, 2010). Mount Mica was found in October 1821 by two professional men: one a doctor of medicine, Ezekiel Holmes, and one a lawyer, Elijah Hamlin. The day following the discovery was marked by a surprise early snowfall preventing further exploration until Hamlin's younger brothers drilled and blasted the ledge in the summer of 1822.(Although there are numerous reports which cite Augustus Hamlin's histories of the locality claiming an 1820 discovery, the date is incorrect for many reasons and the actual snowfall date is now known (Sturtevant, 1948; Perham, 1987, King, 2000, 2001, 2006a,b, 2012). Analysis of snowfall records made by Parker Cleveland as well as a search of Oxford County town histories corroborate Sturtevant (1948) and Perham (1987) and point to October 18, 1821, as the day of the discovery of Mount Mica and the famous snowstorm covering Mount Mica until the spring (King, 2012). Mount Mica is an LCT-class granite pegmatite.

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 its first crystals in 1927. A third world locality was discovered in 1942, at the Rose Quartz Crystal locality, also in Newry. Rose Quartz crystals were not known in Brazil until 1958.

It is particularly interesting that some pink Mount Mica tourmaline fluoresces blue in short-wave ultraviolet light, but that property is not so widespread at Mount Mica as the very fluorescent tourmaline of the Dunton Quarry, Newry (q.v.). Fluorescence is not a property that can be unambiguously used to differentiate genuine Mount Mica tourmaline from mislabeled Mount Mica tourmaline, but there may be useful comparisons when known and suspected specimens are examined at the same time.

Local rocks include Silurian Sangerville Formation Anasagunticook member.

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

66 valid minerals. 3 (TL) - type locality of valid minerals. 11 erroneous literature entries.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

252.17 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Paleozoic (252.17 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

433.4 - 443.8 Ma

ID: 2815269
Silurian Sangerville Formation, Anasagunticook member

Age: Llandovery (433.4 - 443.8 Ma)

Stratigraphic Name: Anasagunticook Member

Description: Silurian Sangerville Formation Anasagunticook member

Comments: In western sequence of central Maine trough, divided into a main body, lower member near Woodstock (schist and granofels probably equivalent to member B), upper member near Woodstock (schist and granofels probably equivalent to member C), member A (in turn divided into gray shale and massive sandstone facies, massive sandstone facies, and polymict conglomerate facies), member B (in turn divided into quartz-rich, polymictic conglomerate facies and gray shale and sandstone facies), and member C (in turn divided into quartz conglomerate, sandstone, and gray shale; impure limestone and quartz conglomerate lenses; and upper gray shale and sandstone). (ME004) Unit description from USGS GEOLEX website (ME078). E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; Protolith H - Lithic sandstone and conglomerate.

Lithology: Major:{metasandstone}, Minor:{metasiltstone,slate,marble}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. 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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Landes, K. K. (1925): Paragenesis of the granitic pegmatites of central Maine. American Mineralogist, 10, 355-411. [http://www.minsocam.org/MSA/collectors_corner/arc/mepeg.htm]
Sturtevant, Lawrence M. (1948), Ezekiel Holmes and his Influence, 1801-1865, MA Thesis, University of Maine, Orono, pp. 87.
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: 938.
Rand, John R. (1957), Maine Geological Survey Mineral Resources reference map 1 (June 30, 1957).
Hussey II, Arthur M. (1958), Maine Geological Survey Mineral Resources Index Series No. 3: 29 (June 1, 1958).
Morrill, Philip, et al (1958), Maine Mines & Minerals, volume 1: 37.
Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt (1973), prepared by members of the Maine Federation Club: 8.
Mineralogical Record (1991): 22: 382.
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.
Canadian Mineralogist (1994): 32: 839-842.
King, V. T. and Foord, E. E. (1994), Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, 418 pp. + 88 plates.
King, Vandall T. (1998b), The Hamlin Letters, part 2 [Augustus Hamlin], Journal of the Geo-Literary Society,: 13(2): 14-18.
King, Vandall T. (1998a), Letters from Maine [Augustus Hamlin], Journal of the Geo-Literary Society,: 13(2): 8-14.
Thompson, W.B., et.al. (1998), Maine Mineral Localities, 3rd Ed.
King, V. (2000), Mount Mica: The Beginnings of Maine Mineral Production, in V. T. King (editor), Mineralogy of Maine, Mining History, Gems, and Geology, volume 2, Maine Geological Survey, Augusta, Maine: 83-127.
King, V. and Foord, E. (2000), Mineralogy of Maine, Mining History, Gems, and Geology, volume 2, Maine Geological Survey, Augusta, Maine, 524 pp. + 25 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.
King, Vandall T. (2001), Still a Dead End – When was Mt. Mica Discovered?, Journal of the Geo-Literary Society,: 16(2): 9ff.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10194026.
King, Vandall T. (2006a), Mineralogy and Chemistry at Harvard 1800-1865; In Search of John White Webster – an Innocent Man, Journal of the Geo-Literary Society,: 21(2): 5-24.
King, Vandall T. (2006b), Primary Sources and a Partial Analysis of a Revered History Book – This [sic] History of Mount Mica, Journal of the Geo-Literary Society,: 21(3): 5-23.
King, Vandall T. and Teixeira, Angie (2010), Massachusetts: The First Rubellite Locality in the USA, The Vug,: 3(1): 5-7, 9, 11.
King, Vandall T. (2010), In Search of Dr. David Hunt: Father of American Tourmaline, Journal of the Geoliterary Society: 25(1): 10-13.
King, Vandall T. (2012), In Search of Alois [aka Lewis] Baron von Lederer with Reference to Mineral Collecting in Diana, New York and Mount Mica, Paris, Maine, Journal of the Geoliterary Society: 27(1): 4-28.
Kelly, Jennifer Christine (2012), "The fluid evolution of the Mount Mica and Irish Pit pegmatites, Maine: Evidence from stable isotopes", M.S. thesis, California State University, Long Beach, 2012, 115; 1521627. http://pqdtopen.proquest.com/pubnum/1521627.html
Clark, Kimberly T. (2014), "Contact Zone Mineralogy and Geochemistry of the Mt. Mica Pegmatite, Oxford County, Maine", University of New Orleans Theses and Dissertations. Paper 1786. http://scholarworks.uno.edu/td/1786
Marchal, Karen L. (2014), "Geochemistry, Mineralogy and Evolution of Mica and Feldspar from within the Mount Mica Pegmatite, Maine, USA", University of New Orleans Theses and Dissertations. Paper 1822.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0230170119.

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