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Spatial Coverage is exactly "Concord Quad, on highway 127, W flank of Emerson Hill, 1.25 mi E of Dam and Bridge at West Hiplinton"

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Hornblende Gabbro-Diorite

Hornblende Gabbro-Diorite from the Spaulding quartz diorite. Thin section contains hornblende, plagioclase, and quartz. Hand sample contains hornblende, plagioclase, and quartz.

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