rutile is common in pegmatite at Hiddenite, North Carolina, associated with muscovite, beryl, and occasionally...an emerald crystal, from North America Emerald Mines, Hiddenite, North Carolina. The emerald is about I...localities include: the McGuire pegmatite, Park County, Colorado; the Etta and Peerless mines, near Keystone...with lesser amounts of anatase and U l s t e r County, New York. Minute tabular brookite crystals rutile)...occurs with quartz crystals at the Ellenville Lead mine, granite at Topsham, Maine. Figure 20. A thumbnail-sized |