“Microcline (Baveno twin) with oligoclase and biotite from an unidentified quarry in the Westerly Granite, Westerly, Washington Co., Rhode Island, USA. Museum of Natural History and Planetarium, Roger Williams Park, Providence, Rhode Island specimen #G2594 2350. Collected by H. Anthony Dyer in the early 1900s. ”
Michael Kieron - 25th April 2017