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September-October 2013

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The Maryland Mine, Maryland's Last Underground Gold Mine

The Maryland mine in Montgomery County, Maryland, was intermittently mined for gold between 1867 and 1940. It was one of the largest, oldest, and most productive gold mines in Maryland. The gold found in the Maryland mine was generally microscopic to finely disseminated in quartz and schist. However, localized rich pods of coarse native gold that produced outstanding specimens were occasionally found. Although few such specimens are seen today in private collections or museums, numerous examples are known, including a recently “rediscovered” exceptional gold specimen collected prior to 1940 and given as a gift to mine foreman Edgar T. Ingalls by the wife of one of the early mine owners (fig. 1) (Huntley Ingalls, pers. comm., 2011).

Jeffrey W. Nagy is a gem facetor and has been a mineral collector for more than forty years, specializing in the minerals and gemstones of Maryland. He is a member of the Gem, Lapidary, and Mineral Society of Montgomery County, Maryland, and the Baltimore Mineral Society.

Fred J. Parker has a master's degree in materials science/geology and has been a mineral collector for more than forty-five years, specializing in the minerals of Franklin-Ogdensburg, New Jersey, and Maryland.

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