Saturday, Sept 8, 10:30 a.m.–noon
Ocean Beach
Search for elusive “black sand” (aka the magnetic mineral magnetite). Tools and materials will be provided, and take home black sand and magnets, to make your own miniature Black Sand exhibit — just like the one at the Exploratorium. $15 (members only), 415-561-0360, www.exploratorium.edu
Child's Play
Black Sand Treasure Hunt
September 8th, 2012
