Maine, USA

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Deposits of rare-element-bearing and gem-bearing granite pegmatites are well-known in Oxford, Androscoggin, and Sagadahoc Counties in the southwest portion of the State. These pegmatites were formerly noted for ceramic-grade feldspar production along with beryl and sheet muscovite. There are many lithium- and cesium-enriched LCT pegmatites in the Oxford County and Androsoggin County Field. In Sagadahoc County, Li- or Cs-enriched LCT granite pegmatites are uncommon and there are some NYF pegmatites, present. Additional granite pegmatites occur in Cumberland County and scattered in other areas. Additional deposits include small generally low-grade lead-zinc-copper sulfide deposits along the coastal region with a few important sulfide deposits in the eastern part of the coastal region and several larger high-grade deposits in the north central part of the state ranging from Oxford, Franklin, Somerset, Piscataquis, and Aroostook Counties. Large low-grade manganese silicate deposits are present in Aroostook County. Granite quarries are widespread in the southern portion of the State including coastal regions. High grade slate is still quarried in the Monson District. Lime-grade marble is still quarried in the Thomaston District. Much of the State is composed of metamorphic and plutonic igneous rocks, with relatively few sedimentary rocks.

Mindat Articles

Pegmatites: How to Locate a New Mineral Rich Locality by Gary Powell

Mineral List

Mineral list contains entries from the region specified including sub-localities

Acanthite Actinolite Aegirine Aegirine-augite Aenigmatite Albite var: Andesine var: Cleavelandite var: Oligoclase 'Albite-Anorthite Series' Allanite-(Ce) Allophane Alluaudite ? Almandine 'Almandine-Spessartine Series' Alunogen ? Amblygonite var: Hebronite 'Amphibole Group' var: Uralite Analcime Anatase Andalusite var: Chiastolite Andradite Anglesite Anhydrite Ankerite Annite Anorthite var: Bytownite var: Labradorite Anorthoclase Anthophyllite Antigorite var: Bowenite 'Apatite' 'var: Carbonate-rich Apatite' 'var: Collophane' 'Apophyllite' Aragonite Arfvedsonite Arsenopyrite Astrophyllite Augelite Augite var: Titanian Augite Aurichalcite Autunite Axinite-(Fe) 'Axinite Group' Azurite Babingtonite Barroisite Baryte Bavenite Beidellite Bementite Beraunite Berlinite Bermanite Bertrandite Beryl var: Aquamarine var: Goshenite var: Heliodor var: Morganite Beryllonite (TL) β-Uranophane Beudantite Biotite var: Manganophyllite ? Birnessite Bismuth Bismuthinite Bismutite Bornite Boulangerite Bournonite Braunite Brazilianite Brochantite Brookite Calcite Cancrinite Carminite Carnotite Cassiterite Cerussite Chalcocite Chalcophanite Chalcophyllite Chalcopyrite Chamosite 'Chamosite-Clinochlore Series' 'Chert' Childrenite Chlorargyrite 'Chlorite Group' Chromite Chrysoberyl Chrysocolla Chrysotile Cimolite Clarkeite Clinochlore var: Pennine Clinochrysotile Clinozoisite Cobaltite Columbite Columbite-(Fe) Columbite-(Mn) Cookeite (TL) Copiapite Copper Cordierite Corundum Covellite Crandallite Cryptomelane Cubanite Cummingtonite Cuprite 'Cymatolite' 'Dahllite'

Datolite 'Deweylite' Diadochite 'Diallage' Diaspore Dickinsonite-(KMnNa) Diopside Dolomite Dravite Dumortierite Earlshannonite Edenite Elbaite Enargite Enstatite Eosphorite Epidote Euclase Eucryptite Evansite ? Fairfieldite Fayalite 'Feldspar Group' 'var: Sunstone' Ferberite Fergusonite-(Y) Ferrimolybdite Ferrisicklerite Ferro-edenite Ferrohornblende Ferropargasite Ferrosilite Ferrostrunzite Fluorapatite var: Carbonate-rich Fluorapatite var: Francolite var: Mn-bearing Fluorapatite Fluorite Fluornatromicrolite Foitite Forsterite Fourmarierite Gahnite Gainesite (TL) Galena var: Argentiferous Galena Ganophyllite 'Garnet' 'Garnierite' Gedrite Gersdorffite Gibbsite Glucine Goethite Gold Gorceixite Goyazite Graftonite Graphite Grayite Greenockite Greifensteinite Grossular var: Hessonite Grunerite 'Gummite' Gypsum Halite Halloysite Halloysite-7Å Hawleyite ? Hematite var: Specularite Hemimorphite Hercynite var: Picotite Herderite Heterosite 'Heterosite-Purpurite Series' Hisingerite Holmquistite 'Hornblende' Hübnerite Humite Hureaulite Hurlbutite 'Hydronephelite' Hydroxylapatite var: Carbonate-rich Hydroxylapatite Hydroxylherderite Hydrozincite Hypersthene Iddingsite Illite Ilmenite Ishikawaite 'Jahnsite' Jahnsite-(CaMnFe) Jahnsite-(CaMnMn) Jahnsite-(MnMnMn) Jarosite ? Kaersutite Kainosite-(Y) Kamphaugite-(Y) Kaolinite Kasolite Kastningite Kerolite 'K Feldspar' 'var: Adularia' Kosnarite (TL) Kyanite Lacroixite Landesite (TL) Laueite Laumontite Lazulite Lepidocrocite Lepidolite Leucite Leucophosphite Limonite Linarite Linnaeite Lithiophilite Lizardite

Löllingite Ludlamite Mackinawite Magnesiochromite Magnesiohornblende Magnesite Magnetite Malachite 'Manganese Oxides' 'var: Manganese Dendrites' Mangangordonite (TL) Manganite Manganocummingtonite Marcasite Margarite Marialite Mccrillisite (TL) Meionite Melanterite Messelite Meta-autunite Metaschoepite Metastibnite Metaswitzerite Metatorbernite Metauranocircite 'Mica Group' Microcline var: Amazonite Microlite Group Mimetite Mitridatite Molybdenite Molybdite Monazite-(Ce) Montebrasite Montmorillonite Moraesite 'Mountain Leather' Muscovite var: Damourite var: Fuchsite var: Lithian Muscovite var: Sericite Natrolite Natromontebrasite Neotocite Nepheline Nickeline 'Nickel-iron' Niggliite Nontronite Nsutite Olenite 'Olivine' Opal var: Opal-AN Orpiment Orthoclase Palermoite Paragonite Pargasite Pectolite Pentlandite Perhamite (TL) 'Perthite' Petalite Pharmacosiderite Phenakite Phengite Phlogopite Phosphoferrite 'Phosphoferrite-Reddingite Series' ? Phosphophyllite Phosphosiderite Phosphuranylite Pigeonite 'Pinite' 'Pisolite' Platinum Pollucite Polycrase-(Y) Powellite Prehnite Proustite Pseudolaueite Pumpellyite-(Fe2+) Pumpellyite-(Mg) Purpurite Pyrargyrite Pyrite var: Bravoite Pyrolusite Pyromorphite Pyrophanite Pyrophyllite 'Pyroxene Group' Pyrrhotite var: Nickeloan Pyrrhotite Quartz var: Agate var: Amethyst var: Bloodstone var: Blue Quartz var: Carnelian var: Chalcedony var: Citrine var: Jasper var: Milky Quartz var: Pseudocubic Quartz var: Rock Crystal var: Rose Quartz var: Rutilated Quartz var: Sceptre Quartz var: Smoky Quartz Rammelsbergite Realgar Reddingite Rhodochrosite Rhodonite Riebeckite Robertsite Rockbridgeite Romanèchite Rosasite Roscherite

Rossmanite Rutherfordine Rutile var: Ilmenorutile Safflorite Samarskite-(Y) Sanidine Saponite 'Scapolite' Schafarzikite Scheelite Schoepite Schoonerite Schorl 'Schrötterite' Scolecite Scorodite Scorzalite Sekaninaite 'Serpentine Group' 'var: Retinalite' Serpierite Siderite Sillimanite Silver Smithsonite Sodalite Souzalite Sperrylite Spessartine Sphalerite var: Marmatite Spinel Spodumene var: Kunzite Stannite Staurolite Stellerite Stephanite Stevensite Stewartite Stibiotantalite Stibnite 'Stilbite' Stilbite-Ca Stilpnomelane Strengite Stromeyerite Strunzite 'Strunzite Group' Struvite Sulphur Switzerite Talc var: Steatite Tantalite Tantalite-(Mn) 'Tapiolite' Tapiolite-(Fe) Tapiolite-(Mn) Tellurium Tennantite Tenorite Tetradymite Tetrahedrite ? Thomsonite-Ca Thorianite Thorogummite Titanite Todorokite Topaz Torbernite Tosudite var: Lithium Tosudite 'Tourmaline' 'var: Achroite' 'var: Indicolite' 'var: Rubellite' 'var: Verdelite' 'var: Watermelon Tourmaline' Tremolite Triphylite Triplite Triploidite Turgite Tyuyamunite Ulvöspinel Unnamed (Ca-analogue of Zigrasite) Uralolite Uraninite var: Pitchblende Uranocircite Uranophane Ushkovite Uvarovite Uvite Valentinite Valleriite Vandendriesscheite Vanmeersscheite Väyrynenite Vesuvianite Violarite Vivianite Wagnerite Walentaite Wardite Whitlockite Whitmoreite Wodginite Wolframite Wollastonite Wölsendorfite Wulfenite Wurtzite Xanthoxenite Xenotime-(Y) Zanazziite Zigrasite (TL) Zinnwaldite Zircon var: Cyrtolite Zoisite

769 entries listed. 353 valid minerals. 9 type localities (valid minerals). 32 erroneous literature entries.

Localities in this Region

USA Maine Androscoggin Co. Auburn Lewiston Livermore Minot Poland Aroostook Co. Castle Hill Hammond Place Linneus Mapleton Molunkus Monticello New Limerick T12 R8 WELS T3 R9 WELS TD R2 WELS Cumberland Co. Baldwin Baldwin - Standish Bridgeton Brunswick Casco Cumberland Falmouth Freeport Gorham Gray Harpswell Naples New Gloucester Portland Pownal Raymond Standish Westbrook Windham Yarmouth Franklin Co. Alder Stream Township Carrabassett Valley Carthage Chesterville D Township Dallas Plantation E Township Eustis Farmington Flagstaff Jay Jim Pond Kingfield Phillips Rangeley Rangeley Plantation Redington Upper Cupsuptic Township Hancock Co. Bar Harbor Blue Hill Brooksville Castine Deer Isle Franklin Gouldsboro Mount Desert Penobscot Sedgwick Sorrento Southwest Harbor Stonington Sullivan T10 SD Verona Kennebec Co. Augusta Gardiner Hallowell Litchfield Monmouth West Gardiner Winslow Winthrop Knox Co. Appleton Camden Rockland Rockport Saint George South Thomaston Thomaston Union Vinalhaven Warren Washington Lincoln Co. Boothbay Harbor Bristol Edgecomb Lincoln sill Waldoboro Oxford Co. Albany Andover Andover Surplus Batchelder's Grant Brownfield Bryant Pond Buckfield Byron Canton Denmark Dixfield Fryeburg Gilead Grafton Greenwood Hartford Hebron Lovell Mason Mexico Milton Newry Norway Oxford Paris Parmachenee Peru Porter Rumford Standish Stoneham Stow Sumner Sweden Upton Waterford West Paris Woodstock

USA Maine Penobscot Co. Carmel Dexter Garland Hampden Hermon Lakeville Levant T6 R6 WELS Piscataquis Co. Big Moose Township Katahdin Iron Works Little Moose Township Monson Sagadahoc Co. Bath Bowdoin Bowdoinham Georgetown Phippsburg Topsham West Bath Woolwich Somerset Co. Attean Bradstreet Concord Lower Enchanted Parlin Pond Township Sapling Township Skowhegan Waldo Co. Frankfort Liberty Northport Palermo Searsmont Washington Co. Calais Charlotte Cooper Eastport Edmunds Lubec Marshfield Milbridge Pembroke Perry Princeton Robbinston York Co. Acton Cashes Ledge Cornish Eliot Kennebunkport Lebanon Newfield North Berwick Parsonsfield Sanford Shapleigh Wells York

References