Topsham quarries

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The Topsham quarries are located in the Cathance Nature Preserve in Topsham, Maine. The group of quarries consist of Havey Quarry, Trenton Quarry, Alice Staples Quarry, and Square Pit. These quarries were dug in the 1800s for minerals. Today Havey Quarry is owned by Richard Carrier and is still used for collecting minerals. Trenton Quarry, Alice Staples Quarry and Square Pit are all owned by John Whitney. [1]

Topsham, Maine Town in Maine, United States

Topsham is a town in Sagadahoc County, Maine, United States. The population was 8,784 at the 2010 census. It is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area. The town is home to the annual Topsham Fair.

Trenton Quarry

Trenton Quarry is the largest quarry and has the most visitors out of the four. Trenton quarry's deposit type is granite pegmatite, and there are eleven different minerals that are found in Trenton Quarry. The minerals found are albite, almandine, annite, beryl, aquamarine, biotite, columbite, elbaite, microcline, muscovite, and quartz. [2]

Granite A common type of intrusive, felsic, igneous rock with granular structure

Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy. The word "granite" comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a holocrystalline rock. Strictly speaking, granite is an igneous rock with between 20% and 60% quartz by volume, and at least 35% of the total feldspar consisting of alkali feldspar, although commonly the term "granite" is used to refer to a wider range of coarse-grained igneous rocks containing quartz and feldspar.

Pegmatite Very coarse grained plutonic rock

A pegmatite is an igneous rock, formed underground, with interlocking crystals usually larger than 2.5 cm in size (1 in). Most pegmatites are found in sheets of rock near large masses of igneous rocks called batholiths.

Albite feldspar, mineral

Albite is a plagioclase feldspar mineral. It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula NaAlSi3O8. It is a tectosilicate. Its color is usually pure white, hence its name from Latin albus. It is a common constituent in felsic rocks.

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Quarry A place from which a geological material has been excavated from the ground

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Open-pit mining surface mining technique of extracting rock or minerals from the earth

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Gahnite spinel, oxide mineral

Gahnite, ZnAl2O4, is a rare mineral belonging to the spinel group. It forms octahedral crystals which may be green, blue, yellow, brown or grey. It often forms as an alteration product of sphalerite in altered massive sulphide deposits such as at Broken Hill, Australia. Other occurrences include Falun, Sweden where it is found in pegmatites and skarns, Charlemont, Massachusetts; Spruce Pine, North Carolina; White Picacho district, Arizona; Topsham, Maine; and Franklin, New Jersey in the United States.

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