Description: Muscovite book specimen 12 cm in length, 2 cm thick. Woodlawn Quarry, Wilmington, Delaware, USA Another self-collected specimen from the Woodlawn Quarry, Wilmington, DE. This is a typical glinting pegmatite from this site composed of muscovite, white plagioclase, and quartz. Occasionally these pegmatites feature almandine as an accessory mineral.

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