Saturday, 3/12 –  Chicago Rocks & Mineral Society’s 62nd Annual Silent Auction, Saturday, March 12, 6 to 9 p.m. St. Peter’s United Church of Christ, 8013 Laramie Ave., Across from the Skokie Public Library at Oakton

Saturday 3/12 – Mineralogy and Micromounting Study Group 7:30 p.m. College of Dupage, Building K, Rm 131.