Abstract

During the excavation for the National Guard Armory at Manchester, New Hampshire, in the spring of 1939, bedrock was exposed in several places. In one of the outcrops on the south side of the property, John E. Warren, of Manchester, found some interesting and colorful minerals which were identified as idocrase, scapolite, and garnet. This deposit was visited by Dr. George W. White, of the Geology Department at the University of New Hampshire, and the author during the summer of 1939.

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