Topsham, Sagadahoc Co., Maine, USA

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Granite pegmatites. Brunswick pegmatite field. Large number of quarries and prospects that are permanently water-filled.
Ref.: Rocks & Min.: 62:407-415 (list on 409). Topsham is located about 25 miles NE of Portland, ME. The mineralization is a mile-wide belt of granitic pegmatites originally operated as feldspar quarries in a large district. Numerous world-famous radioactive mineral outcrops cover an area of several square kilometers from Standpipe Hill in the west near the Androscoggin River to the Cathance River in the east. The uraninite, monazite-(Ce), and ishakawaite minerals are particularly radioactive as they contain varying small amounts of thorium.

Mineral List

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

Albite var: Cleavelandite var: Oligoclase Allanite-(Ce) Almandine Anatase Annite Arsenopyrite Autunite Bertrandite Beryl var: Aquamarine var: Emerald var: Heliodor var: Morganite 'Biotite' Bismuthinite Bismutite Brochantite

Brookite Chalcopyrite Chrysoberyl 'Columbite' Columbite-(Fe) Columbite-(Mn) Elbaite Euclase Fergusonite-(Y) Fluorapatite Foitite Gahnite Goethite Grayite Hematite Hydroxylherderite Ilmenite Ishikawaite Lepidolite

Magnetite Meta-autunite Metatorbernite Microcline Microlite Group Molybdenite Monazite-(Ce) Muscovite var: Schernikite var: Sericite Nontronite Opal var: Opal-AN Orthoclase Phenakite Phosphuranylite Polycrase-(Y) Pyrite Quartz var: Rose Quartz

Quartz var: Smoky Quartz Rutile Schoepite Schorl Stibiotantalite Tantalite-(Mn) 'Tapiolite' Tapiolite-(Fe) Thorianite Thorogummite Topaz Torbernite 'Tourmaline var: Indicolite' 'var: Rubellite' 'var: Verdelite' Uraninite Uranophane Xenotime-(Y) Zircon

86 entries listed. 59 valid minerals.

Localities in this Region

USA Maine Sagadahoc Co. Topsham Adderton Quarry Androscoggin Falls locality Biotite Crystal Prospect Booker Quarry Chapman Quarry Consolidated #1 Quarry Consolidated #2 Quarry (Purington Quarry) Consolidated #3 Quarry Fisher Quarry Garland Quarry Given #1 Quarry Given #2 Quarry Graves Quarry Gustin Quarry Havey #1 & #2 Quarries Ingalls Quarry Leavitt Prospect Lost Quarry Mallet Quarry Metcalf Quarry Mount Ararat Quaries North Topsham Quarry Ordway Quarry

USA Maine Sagadahoc Co. Topsham Pejepscot Mill locality Porcupine Hill Quarry Powers Mountain Quarries Prout Farm prospect Railroad Quarry Rumrill Quarry Russell Brothers Quarry Russo Quarry Square Pit (Consolidated #4 Quarry) Standpipe Hill Quarries Staples Quarry Swamp #2 quarry Swamp No. 1 Quarry Trenton Quarry (Trenton Flint and Spar Quarry; G. D. Willes Quarry) Trufant prospect Twin Pits Quarry Undivided Quarry Unnamed prospect #1 & 2 Unnamed prospect #3 Unnamed prospect #4 William Willes #1 Quarry William Willes #2 Quarry William Willes #3 Quarry Yedlin Locality